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  • 1. Allum, JHJ
    et al.
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Recovery of vestibulo-ocular reflex-function in subjects with an acute unilateral peripheral vestibular deficit.1999In: Journal of Vestibular Research-Equilibrium & Orientation, ISSN 0957-4271, E-ISSN 1878-6464, Vol. 9, p. 135-144Article in journal (Refereed)
  • 2.
    Andersson, Eva
    et al.
    Linköping University, Department of Neuroscience and Locomotion. Linköping University, Faculty of Health Sciences.
    Arlinger, Stig
    Linköping University, Department of Neuroscience and Locomotion. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Jacobsson, Stellan
    ENT-Clinic, Sahlgrens University Hospital Mölndal, Sweden.
    Evaluation of OAE-recording as a complementary test method for adults with moderate to profound mental retardation2000In: Scandinavian Audiology, ISSN 0105-0397, E-ISSN 1940-2872, Vol. 29, no 2, p. 120-126Article in journal (Refereed)
    Abstract [en]

    The recording of otoacoustic emissions (OAE) was evaluated as a complementary test method for adults with moderate to profound mental retardation (MR). A portable apparatus, ILO 288 Echoport linked to a Compaq LTE 5100 notebook with software ILO 88 V 4.2, was used. Otoscopy and tympanometry were also performed. Criteria for emissions were S/N 3 dB or more and reproducibility 60% or more for at least three frequency-bands. The criteria for partial emissions were the same, but for only one or two frequencies. Two examiners were needed: one to keep the tested person calm and quiet and the other to handle the keyboard. Thirty-eight people with different degrees of MR in connection with other disabilities were included. They had all exhibited incomplete results in a previous hearing screening of more than 1000 adults with MR. Reproducible transiently evoked OAEs (TEOAE) were recorded from II ears (7 people), partial TEOAEs from 6 ears (4 people) and no emissions from 15 ears (10 people). Registration from 24 ears (13 people) could not be evaluated because of too much external and internal noise. Eight people rejected the examination. Only four people showed emissions in both ears. Accordingly, 34 people (89.5%) had to be re-tested or referred for further investigation, 21 of them (55%) because of noisy recordings or no co-operation. It is concluded that the TEOAE-test in its present form cannot fulfil the demands for a functioning test method for this population. In single cases, however, TEOAE-recording can complement other audiological tests.

  • 3.
    Arlinger, Stig
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Technical Audiology. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Audiologic diagnosis of infants2000In: Seminars in Hearing, ISSN 0734-0451, E-ISSN 1098-8955, Vol. 21, p. 379-387Article in journal (Refereed)
  • 4.
    Arlinger, Stig
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Technical Audiology. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Can we establish internationally equivalent outcome measures in audiological rehabilitation?2000In: Ear and Hearing, ISSN 0196-0202, E-ISSN 1538-4667, Vol. 21, no 4 SUPPL.Article in journal (Refereed)
    Abstract [en]

    Objective: This paper intends to discuss issues related to cultural, ethnic, and other nonaudiological variables that may affect the response when trying to determine outcome of audiological rehabilitation in different countries. Design: The ideal measure for the determination of outcome of audiological rehabilitation would be sensitive to changes in disability as well as handicap. Further, it would allow unforeseen effects to be identified and not be limited by language borders or cultural and ethnic differences. A variety of critical factors are discussed that are related to culture, social traditions, ethnic factors, etc. that may affect outcome measures and thus make international equivalence difficult. Conclusions: With careful consideration of the factors discussed, a basic set of questions could be formulated and agreed on, calibrated on suitable populations in different countries, and thereafter used as a bridge across borders to allow comparison of different procedures or meta-analyses of studies performed by different laboratories.

  • 5.
    Arlinger, Stig
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Moderna hörapparater ligger i mikroelektronikens frontlinje.1999In: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 96, p. 3524-3528Article in journal (Other (popular science, discussion, etc.))
  • 6.
    Arlinger, Stig
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Technical Audiology. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Negative consequences of uncorrected hearing loss - A review2003In: International Journal of Audiology, ISSN 1499-2027, E-ISSN 1708-8186, Vol. 42, no SUPPL. 2Article in journal (Refereed)
    Abstract [en]

    Hearing loss gives rise to a number of disabilities. Problems in recognizing speech, especially in difficult environments, give rise to the largest number of complaints. Other kinds of disabilities may concern the reduced ability to detect, identify and localize sounds quickly and reliably. Such sounds may be warning or alarm signals, as well as music and birds singing. The communicative disability affects both hearing-impaired people and other people in their environment-family members, fellow workers, etc. Hearing-impaired people are not always aware of all the consequences of the impairment, they do not always know what they are missing. Several studies have shown that uncorrected hearing loss gives rise to poorer quality of life, related to isolation, reduced social activity, and a feeling of being excluded, leading to an increased prevalence of symptoms of depression. These findings indicate the importance of early identification of hearing loss and offers of rehabilitative support, where the fitting of hearing aids is usually an important component. Several studies also point to a significant correlation between hearing loss and loss of cognitive functions. Most of these studies show such a correlation without being able to show whether the hearing loss caused the reduction in cognitive performance or if both the hearing loss and the cognitive decline are parts of a common, general age-related degeneration. A couple of these studies, however, indicate that the uncorrected hearing loss may be the cause of cognitive decline. Whichever alternative is true, the correlation should be seen as a clear indication for early hearing aid fitting for those needing it. Monaural hearing aid fitting in subjects with bilateral hearing loss may give rise to a reduced ability to recognize speech presented to the unaided ear, the so-called late-onset auditory deprivation effect. This functional decline is reversible in some but not all subjects after fitting of a hearing aid also on the previously unaided ear.

  • 7.
    Arlinger, Stig
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Billermark, Erica
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    One year follow-up of users of a digital hearing aid.1999In: British Journal of Audiology, ISSN 0300-5364, E-ISSN 1471-2849, Vol. 33, p. 223-232Article in journal (Refereed)
  • 8.
    Arlinger, Stig
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Ivarsson, U.
    On quality assurance in occupational hearing conservation programs: an evaluation based on ANSI S 12.13-1991.1999In: Noise & Health, ISSN 1463-1741, E-ISSN 1998-4030, Vol. 2, p. 73-77Article in journal (Refereed)
  • 9.
    Arlinger, Stig
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Technical Audiology. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Lyregaard, Poul-Erik
    Billermark, Erica
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Öberg, Marie
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Fitting hearing aids to first-time users2000In: Scandinavian Audiology, ISSN 0105-0397, E-ISSN 1940-2872, Vol. 29, no 3, p. 150-158Article in journal (Refereed)
    Abstract [en]

    Clinical experience indicates that first-time hearing aid users prefer less gain and lower maximum output levels than experienced users. This hypothesis was tested on 20 subjects being fitted with their first aids. The study was double blinded by using a programmable hearing aid, set to either the standard setting according to the manufacturer's software or to reduced gain and maximum output. Half of the subjects started with one hearing aid and half with the other, changing to the other hearing aid after 3 days trial with each setting. At the end of the study, subjects stated preference in specified situations and overall. No significant differences in APHAB, sound quality, estimated communication ability or perceived loudness scores were seen for the two settings. Nine subjects preferred the standard setting, seven the reduced setting and four were undecided. No correlation could be found between preference and audiological variables.

  • 10. Brown, C.
    et al.
    Magnusson, Bengt
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    On the physics of the infant feeding bottle and middle ear sequela: Ear disease in infants can be associated with bottle feeding2000In: International Journal of Pediatric Otorhinolaryngology, ISSN 0165-5876, E-ISSN 1872-8464, Vol. 54, no 1, p. 13-20Article in journal (Refereed)
    Abstract [en]

    Background: When using conventional feeding bottles, negative pressure is generated in the oral cavity, as well as, in the bottle when fluid is removed by sucking. The negative pressure inside the bottle causes the infant to suck excessively and the intraoral negative pressure may subsequently be transmitted to the middle ear via the eustachian tube. Methods: In seven infants, simultaneous pressure recordings were performed in the feeding vessel and the middle ear using three types of feeding bottles. Results: With conventional non-ventilated and under-ventilated bottles a negative pressure formed while the infant sucked and negative intratympanic pressure was frequently generated. Conclusions: It is suggested that this sequence of events may lead to secretory otitis and it's accompanying consequences. In contrast, a fully ventilated bottle showed positive pressure throughout the feeding procedure, which is similar to normal breast-feeding, and negative pressure changes were not recorded in the middle ear.

  • 11. Brunne, M.
    et al.
    Falk, B.
    Hellström, S.
    Magnusson, Bengt
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Qualitative research methods in otorhinolaryngology.1999In: International Journal of Pediatric Otorhinolaryngology, ISSN 0165-5876, E-ISSN 1872-8464, Vol. 51Article in journal (Refereed)
  • 12. Brunne, M.
    et al.
    Falk, B.
    Hellström, S.
    Magnusson, Bengt
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    The character and consequenses of disturbing sound sensations in retraction type middle ear disease.1999In: International Journal of Pediatric Otorhinolaryngology, ISSN 0165-5876, E-ISSN 1872-8464, Vol. 51, p. 11-21Article in journal (Refereed)
  • 13. Bunne, M
    et al.
    Falk, B
    Magnusson, Bengt
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Hellström, S.
    Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Eustachian tube function varies over time in children with secretory otitis media.2000In: Acta Oto-Laryngologica, ISSN 0001-6489, E-ISSN 1651-2251, Vol. 120, p. 716-723Article in journal (Refereed)
  • 14. Bunne, Marie
    et al.
    Falk, Berndt
    Magnusson, Bengt
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Hellström, Sten
    Variability of Eustachian tube function: Comparison of ears with retraction disease and normal middle ears2000In: The Laryngoscope, ISSN 0023-852X, E-ISSN 1531-4995, Vol. 110, no 8, p. 1389-1395Article in journal (Refereed)
    Abstract [en]

    Objective: To explore the short-term and long-term variability of tubal opening and closing in ears with advanced retractions and in healthy ears. Study Design/Methods: Twenty ears with retraction type middle ear disease (R-MED) and 20 normal ears underwent direct recording of the middle ear pressure during repeated forced openings, equalization of +100 daPa and -100 daPa by swallowing, Valsalva inflation, and forceful sniffing. Tests were performed twice (separated by 30 min) on each of 2 days separated by 3 to 4 months. Results: There was considerable intraindividual variability of the forced opening pressure and the closing pressure in both groups, within as well as between sessions and test days. Although the variability was 1.5 to 2 times higher in ears with retraction than in the normal group, mean Po and Pc did not differ between the groups. Compared with normal ears, ears with retraction changed more frequently from a positive to negative test response, or vice versa, when re-tested after 30 minutes. Rates of positive response in the equalization and Valsalva tests were significantly lower in diseased ears compared with normal ears. Conclusions: Eustachian tube opening and closing functions vary more in ears with retraction disease than in normal ears, which is consistent with the variable clinical course of R-MED and implies that single tubal function tests have little prognostic value on the individual level.

  • 15. Bunne, Marie
    et al.
    Falk, Bernt
    Hellström, Sten
    Magnusson, Bengt
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Variability of Eustachian tube function in children with secretory otitis media. Evaluations at tube insertion and at follow-up2000In: International Journal of Pediatric Otorhinolaryngology, ISSN 0165-5876, E-ISSN 1872-8464, Vol. 52, no 2, p. 131-141Article in journal (Refereed)
    Abstract [en]

    Objective: Despite the variable clinical course of diseases related to Eustachian tube function, the variability of tubal function has been less focused than outcomes of single tests. This study aimed to compare the passive and active tubal function and its variability in children with secretory otitis media (SOM) at tube insertion and at follow-up. Method: Thirty-eight ears in 19 children aged 4-10 years (mean 7.0 years) with long-standing SOM were examined 4-6 h after tube insertion, at 4 months and at 9 months. The pressure in the middle ear and the nasopharynx were recorded while performing (1) forced opening test, (2) equalization of +100 and −100 daPa, (3) Valsalva test, and (4) sniff test. The procedure was repeated after 30 min. Relationships were analyzed by uni- and multi-variate analysis of variance. Results: From tube insertion to 4 months, the mean forced opening pressure increased from 282±128 to 355±153 daPa (P<0.01), and the mean closing pressure from 91±51 to 126±82 daPa (P<0.01). There was no further change at 9 months. Female gender, serous effusion (in contrast to mucoid), and more than three previous episodes of acute otitis media were related to higher opening and closing pressures. At tube insertion, 60% and 16% equalized +100 and −100 daPa, respectively, and 28% succeeded in performing Valsalva inflation. The sniff test was positive in 32%, indicating a closing failure. These rates did not change significantly over time. For individual ears, outcomes of all tests varied considerably when retested after 30 min; Po changed by ±12% and Pc by ±26%, and 9-29% of the ears changed from a positive to negative response, or vice versa, in the equalization, Valsalva, and sniff tests. Conclusions: The unexpected finding of weaker closing forces at the day of tube insertion and increased tubal resistance at follow-up might be ascribed to changes in the muco-adhesive forces related to the disease and tube treatment. The pronounced intra-individual variability of test outcomes indicates that tubal function is dynamic and variable in ears prone to SOM, which emphasizes that results of single tubal function tests have very low prognostic value.

  • 16. Cox, Robyn
    et al.
    Hyde, Martyn
    Arlinger, Stig
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Technical Audiology. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Optimal outcome measures, research priorities, and international cooperation.2000In: Ear and Hearing, ISSN 0196-0202, E-ISSN 1538-4667, Vol. 21, p. 106-115Article in journal (Refereed)
  • 17.
    Ekblad, S
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Molecular and Clinical Medicine, Obstetrics and gynecology. Östergötlands Läns Landsting, Centre of Surgery and Oncology, Department of Surgery in Östergötland.
    Bergendahl, A
    Enler, P
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Möller, C
    Hammar, Mats
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Molecular and Clinical Medicine, Obstetrics and gynecology. Östergötlands Läns Landsting, Centre of Surgery and Oncology, Department of Surgery in Östergötland.
    Disturbances in postural balance are common in postmenopausal women with vasomotor symptoms2000In: Climacteric, ISSN 1369-7137, E-ISSN 1473-0804, Vol. 3, no 3, p. 192-198Article in journal (Refereed)
    Abstract [en]

    Objectives: To establish the prevalence of unsteadiness and rotatory vertigo in peri- and postmenopausal women, and whether balance disturbances are more common in women with vasomotor symptoms and without hormone replacement therapy (HRT). Method: A validated questionnaire was sent to all 1523 women aged 54 or 55 years in Linkoping, Sweden. Results: Daily or weekly unsteadiness was reported by 5%, and daily or weekly rotatory vertigo by 4% of all women. The frequency of vasomotor symptoms correlated with reported unsteadiness (rs = 0.23, p < 0.001). Fourteen per cent of women with daily vasomotor symptoms reported weekly or daily unsteadiness, compared with 3% of those without vasomotor symptoms (odds ratio (OR) 7.58, 95% confidence interval (CI) 3.72-15.45). The frequency of vasomotor symptoms correlated with rotatory vertigo (rs = 0.19, p < 0.001). Ten per cent of women with daily vasomotor symptoms reported weekly or daily rotatory vertigo, compared with 2% of women without vasomotor symptoms (OR 5.21, 95% CI 1.07-25.52). No correlation was seen between vasomotor symptoms and falls. Users of HRT had the same prevalence of balance disturbances as non-users. Conclusions: Women with frequent vasomotor symptoms seem to run a greater risk of unsteadiness and rotatory vertigo than do women without symptoms. This association may not be explained by means of a cross-sectional study, but there might exist a causal connection between vasomotor symptoms and balance disturbances.

  • 18.
    Ekblad, Sara
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Molecular and Clinical Medicine, Obstetrics and gynecology. Östergötlands Läns Landsting, Centre of Surgery and Oncology, Department of Surgery in Östergötland.
    Lönnberg, Barbro
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Molecular and Clinical Medicine, Obstetrics and gynecology. Östergötlands Läns Landsting, Centre of Surgery and Oncology, Department of Surgery in Östergötland.
    Berg, Göran
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Molecular and Clinical Medicine, Obstetrics and gynecology. Östergötlands Läns Landsting, Centre of Surgery and Oncology, Department of Surgery in Östergötland.
    Ödkvist, Lars
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Hammar, Mats
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Molecular and Clinical Medicine, Obstetrics and gynecology. Östergötlands Läns Landsting, Centre of Surgery and Oncology, Department of Surgery in Östergötland.
    Estrogen effects on postural balance in postmenopausal women without vasomotor symptoms: A randomized masked trial2000In: Obstetrics and Gynecology, ISSN 0029-7844, E-ISSN 1873-233X, Vol. 95, no 2, p. 278-283Article in journal (Refereed)
    Abstract [en]

    Objective: To assess whether estrogen treatment given to postmenopausal women without vasomotor symptoms improves balance more than placebo. Methods: Forty healthy postmenopausal women without vasomotor symptoms were randomized to transdermal 17▀-estradiol (E2) 50 ╡g/day for 14 weeks or identical transdermal placebo patches. Postural balance was measured with dynamic posturography before and after 4, 12, and 14 weeks of therapy. In this test, the visual, vestibular, and somatosensory systems were provoked with increasing difficulty and body sway was measured with a dual forceplate. A low score showed large sway and a score of 100 showed no sway at all. Results: Thirty-eight women completed the study. Both groups had normal balance for their ages and near maximum scores in the three easier balance tests at baseline. In the most difficult test, both groups improved their postural balance significantly (from 13 to 32 and from 22 to 39, respectively) after 4 weeks. Thereafter, no change was seen. One problem was low statistical power, but the relative change in balance did not differ between groups. The comparison did not show even a minute advantage of E2 over placebo, so a study with higher power would probably not have shown a more pronounced effect of estrogen than placebo. The change over time did not differ between groups, which indicates a significant learning effect.Conclusion: In women without vasomotor symptoms, estrogen therapy did not seem to increase postural balance significantly more than placebo. However, we could not rule out that estrogens affect postural balance in women with vasomotor symptoms. Copyright (C) 2000 The American College of Obstetricians and Gynecologists.

  • 19. Förstberg, Johan
    et al.
    Andersson, Evert
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Studie av åkkomfort och åksjuka för lutande tåg2001In: Svensk ÖNH tidskrift, ISSN 1400-0121, Vol. 8Article in journal (Other academic)
  • 20. Gejrot, Tomas
    et al.
    Hydén, Dag
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Apropå otologins profiler2002In: Svensk ÖNH tidskrift, ISSN 1400-0121, Vol. 9, p. 17-17Article in journal (Other (popular science, discussion, etc.))
  • 21.
    Granerus, Göran
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Clinical Physiology. Östergötlands Läns Landsting, Heart Centre, Department of Clinical Physiology.
    Gustafsson, A
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Radio Physics. Östergötlands Läns Landsting, Centre of Surgery and Oncology, Department of Radiation Physics.
    Norberg Spaak, L
    Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Erfarenheter av gammakamera-PET med FDG på patienter med onkologiska diagnoser2002In: Svensk Medicin, ISSN 0284-5342, Vol. 72, p. 140-143Article in journal (Other (popular science, discussion, etc.))
  • 22. Grusell, M.
    et al.
    Osbeck, M
    Schulin, M.
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Evaluating postural control using chaos theory - Apreliminary report.2000In: Sotilaslaaketieteellinen aikakanslehti, ISSN 0300-8797, Vol. 75, p. 102-106Article in journal (Refereed)
  • 23. Hafström, Anna
    et al.
    Fransson, Per-Anders
    Karlberg, Mikael
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Magnusson, Måns
    Visual influence on postural control, with and without visual motion feedback2002In: Acta Oto-Laryngologica, ISSN 0001-6489, E-ISSN 1651-2251, Vol. 122, p. 392-397Article in journal (Refereed)
  • 24.
    Hagert, Britt
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Nursing Science.
    Wahren, Lis Karin
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Pharmacology.
    Wikblad, K
    Ödkvist, Lars
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Patients' and cohabitants' reports on snoring and daytime sleepiness, 1-8 years after surgical treatment of snoring.1999In: Journal for Oto-Rhino-Laryngology, ISSN 0301-1569, E-ISSN 1423-0275, Vol. 61, p. 19-24Article in journal (Refereed)
  • 25. Henriksson, M
    et al.
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Good, L
    Postural control after anterior cruciate ligament reconstruction and functional rehabilitation2001In: American Journal of Sports Medicine, ISSN 0363-5465, E-ISSN 1552-3365, Vol. 29, no 3, p. 359-366Article in journal (Refereed)
    Abstract [en]

    Total sagittal knee laxity and postural control in the sagittal and frontal planes were measured in 25 patients at a mean of 36 months (range, 27 to 44) after anterior cruciate ligament reconstruction and in a control group consisting of 20 uninjured age- and activity-matched subjects. Body sway was measured in the sagittal plane on a stable and on a sway-referenced force plate in single-legged stance, double-legged stance, or both, with the eyes open and closed. Postural reactions to perturbations in the sagittal and frontal planes were recorded in the single-legged stance with the eyes open. Total sagittal plane laxity was significantly greater in the anterior cruciate ligament-reconstructed knee (11.2 mm, range, 6 to 15) than in the uninjured knee (8.9 mm, range, 6 to 12) or in the control group (6.0 mm, range, 5 to 8). In spite of this, the patients, in comparison with the controls, exhibited normal postural control except in two variables - the reaction time and the latency between the start of force movement to maximal sway in the sagittal plane perturbations. This supports the hypothesis that rehabilitation, with proprioceptive and agility training, is an important component in restoring the functional stability in the anterior cruciate ligament-reconstructed knee.

  • 26.
    Hergils, Leif
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    How do we identify hearing impairment in early childhood?2000In: Acta Paediatrica. Supplement, ISSN 0803-5326, Vol. 89, no 434, p. 12-16Article in journal (Refereed)
    Abstract [en]

    This review discusses the need for universal neonatal hearing screening. Historical background is given concerning conventional childhood hearing screening programmes in western countries. Direct studies on the effects of very early habilitation programmes on speech and language development are cited. Measurement of otoacoustic emissions (OAE) as a tool for neonatal hearing screening is presented. The state of neonatal hearing screening programmes in the US and in Europe, particularly in Sweden, is discussed.

  • 27.
    Hergils, Leif
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Ny metod upptäcker medfödda hörselnedsättningar.1999In: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 96, p. 1166-1168Article in journal (Other (popular science, discussion, etc.))
  • 28.
    Hergils, Leif
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Hergils, Å.
    Universal neonatal hearing screening-parental attitudes and concern.2000In: British Journal of Audiology, ISSN 0300-5364, E-ISSN 1471-2849, Vol. 34, no 6, p. 321-327Article in journal (Refereed)
    Abstract [en]

    This study addresses parental attitudes and concern in relation to universal neonatal hearing screening by otoacoustic emissions (OAE) testing. The parents of 87 children who had participated during the first year of the universal neonatal hearing screening programme at University Hospital, Linkoping, Sweden were included in the study. These children were all tested during this period and later cared for at three well-baby clinics (part of their primary healthcare). A questionnaire was given to the parents during routine medical check-ups at the well-baby clinics when the infants were 5-6 months of age. Ninety-five per cent of parents stated that they had a positive attitude towards neonatal hearing screening, 1% were ambivalent and 4% were negative about it. The parents wanted early detection of hearing loss and the possibility of early intervention. It was also found that screening did not disturb the children. A few parents were anxious due to repeated testing of their children. The information provided in connection with the test was found to be sufficient by 77% of parents, whereas 11% of parents had negative comments about it (e.g. they wanted more information about the otoacoustic emissions technique). The general attitude among parents towards universal neonatal hearing screening was very positive in that they felt reassured by it. The risk of disturbing the parent-child relationship by early screening seems to be small, and could be further minimized by improved information and rapid and effective follow-up.

  • 29.
    Hugosson, Svante
    et al.
    Öron Örebro.
    Tjell, Carsten
    Öron Skövde.
    Karlberg, Mikael
    Öron Lund.
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Kammerlind, Ann-Sofi
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Department of Health and Society, Division of Physiotherapy. Östergötlands Läns Landsting, Reconstruction Centre, Department of ENT - Head and Neck Surgery UHL.
    Cervikogen yrsel - eller fobisk postural vertigo (spänningsyrsel)--- Vanlig yrselorsak men omöjlig att diagnostisera?2003In: Svensk ÖNH tidskrift, ISSN 1400-0121, Vol. 10, p. 16-18Article in journal (Other academic)
    Abstract [sv]

      

  • 30.
    Hultcrantz, Elisabeth
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Praktika om snarkning och sömnapné2003Other (Other (popular science, discussion, etc.))
  • 31.
    Hultcrantz, Elisabeth
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Nosrati-Zarenoe, Ramesh
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery.
    Arlinger, Stig
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Technical Audiology.
    Nationell databas kan lösa gåtan med plötslig sensorineural hörselnedsättning2003In: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 100, p. 3055-3059Article in journal (Other academic)
  • 32.
    Hultcrantz, Elisabeth
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Nosrati-Zarenoe, Ramesh
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Orthopaedics and Sports Medicine.
    Arlinger, Stig
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Nationellt register för plötslig sensorineural hörsel-nedsättning - Hur behandlar vi idag?2003In: Svensk ÖNH tidskrift, ISSN 1400-0121, Vol. 2, p. 15-15Article in journal (Other academic)
  • 33.
    Hydén, Dag
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Bror Hjort bejakade livet trots stort hörselhandikapp efter tuberkulos i ungdomen2003In: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 100, p. 2304-2306Article in journal (Other (popular science, discussion, etc.))
  • 34.
    Hydén, Dag
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Latkovic, Stefan
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Ophthalmology. Östergötlands Läns Landsting, Reconstruction Centre, Department of Ophthalmology UHL/MH.
    Brunk, Ulf
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Pathology. Östergötlands Läns Landsting, Centre for Laboratory Medicine, Department of Clinical Pathology and Clinical Genetics.
    Laurent, Claude
    Ear involvement in ligneous conjunctivitis: A rarity or an under-diagnosed condition?2002In: Journal of Laryngology and Otology, ISSN 0022-2151, E-ISSN 1748-5460, Vol. 116, no 6, p. 482-487Article in journal (Refereed)
    Abstract [en]

    Conjunctivitis lignosa, a rare affliction of the conjunctiva, is sometimes associated with other disturbances. We present two children with concurrent conjunctivitis lignosa and ear involvement. In these two cases, there were histopathologically verified ligneous changes of the middle ears. Routine haematoxylin and eosin, van Gieson, periodic acid-Schiff (PAS) and alcian blue staining of specimens from the eyes and middle ears revealed findings typical for ligneous conjunctivitis. In addition, new histochemical and immunohistochemical studies for glycosaminoglycans on specimens from the eyes and middle ears showed that the accumulations of the amorphous, cell-deficient material stained strongly but heterogeneously for hyaluronic acid and weakly but uniformly for keratin sulphate. The staining for other glycosaminoglycans, e.g. chondroitin-4-sulphate and dermatan sulphate was confined to vessels and areas rich in collagen fibres and fibroblasts. In patients with conjunctivitis lignosa, the ear involvement may remain undiagnosed due to its resemblance to secretory otitis media with effusion. Since isolated ear involvement may occur, we advocate biopsies for routine haematoxylin and eosin, and specific staining for hyaluronic acid and keratin sulphate, also in children with protracted, refractory otitis media with atypical effusion.

  • 35.
    Hydén, Dag
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Roberg, Magnus
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Molecular and Clinical Medicine, Infectious Diseases. Östergötlands Läns Landsting, Centre for Medicine, Department of Infectious Diseases in Östergötland.
    Diagnostiken både enkel och svår vid Ramsay Hunts syndrom. Virusangreppet mer omfattande än man tidigare trott.2000In: Läkartidningen, ISSN 0023-7205, E-ISSN 1652-7518, Vol. 97, p. 1114-1120Article in journal (Other academic)
  • 36. Johansson, Ewa
    et al.
    Hultcrantz, Elisabeth
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Tonsillectomy - Clinical consequences twenty years after surgery?2003In: International Journal of Pediatric Otorhinolaryngology, ISSN 0165-5876, E-ISSN 1872-8464, Vol. 67, no 9, p. 981-988Article in journal (Refereed)
    Abstract [en]

    Tonsillectomy (T) is one of the most common surgical procedures performed on children. Long-term follow-up studies concerning its consequences are lacking. This study is the first study done on a group of patients that underwent T in their childhood, about 20 years ago. The investigation is a cohort study, which followed-up 18 patients who were tonsillectomized 20 years ago. It was to be determined whether these subjects suffer from more respiratory tract infections (or other infections) today, than people who are not tonsillectomized. A group of 54 age-matched subjects were selected for comparison. A questionnaire was mailed to the study population. No significant differences were found between the groups in the frequency of upper respiratory tract infection (URI). The mean number of URI's was approximately [MSOffice1]2.5 per year in both groups. The duration of the URI's was identical in each group. A high temperature was present to the same extent in each group. Absence from work, number of visits to physicians and the use of antibiotics were the same in each group. However, the prevalence of chronic disease was greater in the T-group than in the comparison group. The difference was significant with a Relative Risk of 9.41 and a Confidence Interval differing from 1 (1.13

  • 37. Kogler, A
    et al.
    Lindfors, J
    Ödkvist, Lars
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Postural control in different neck positions2002In: Neurootol Newslett, ISSN 1023-6422, Vol. 6, p. 25-27Article in journal (Refereed)
  • 38. Kogler, A.
    et al.
    Lindfors, J.
    Ödkvist, Lars
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Postural stability using different neck positions in normal subjects and patients with neck trauma2000In: Acta Oto-Laryngologica, ISSN 0001-6489, E-ISSN 1651-2251, Vol. 120, no 2, p. 151-155Article in journal (Refereed)
    Abstract [en]

    Subjects with neck problems, such as whiplash injuries, often complain of disturbed equilibrium and, in some instances, provocation of the neck position can elicit such problems. The importance of neck proprioceptors for maintaining balance is gaining increased interest, moreover the function or malfunction of the otoliths may disturb equilibrium in certain head positions. The aim of the study was to create a reference material for postural control and its dependence on head position in healthy subjects and to compare this with a set of patients with known neck problems and associated vertiginous problems. A total of 32 healthy subjects (16 men, 16 women, age range 21-58 years) as well as 10 patients age range 27-62 years (mean 44 years) with neck problems and associated balance problems since a whiplash injury were tested for postural control using the EquiTest dynamic posturographic model. The normal subjects were initially split into four age groups in order to estimate the effects of age on performance. The postural stability was evaluated for dependence of support surface conditions (stable or sway-referenced), visual input (eyes open or closed) and head position (neutral, left rotated, right rotated, extended backwards or flexed forward) using analysis of variance (ANOVA) with Tukey's post hoc test in case of a significant factor effect. As expected, visual cues as well as stable support surface improve postural stability (p < 0.001). Postural stability is statistically different in the head extended backwards condition compared with the other four head positions (p < 0.001 in all cases) in both patients and controls. Eliminating this test condition from the analysis, only a slight (p < 0.05) difference between head forwards and head turned left remained. This pattern of results remained if the normal subjects were only split into two age groups instead of four. Finally, the patient group exhibited significantly lower postural performance than all the groups of normal subjects (p < 0.01), but none of the normal groups differed significantly from each other. It is concluded that the postural control system is significantly challenged in the head extended backwards condition in both normal subjects and patients with previous whiplash injury and persistent neck problems. The patient group differed statistically from all groups of normal subjects. This suggests that neck problems impair postural control, and that the head extended position is a more challenging task for the postural system to adapt to. Whether this is due to utricular malpositioning, central integrative functions or cervical proprioceptive afferents is not within the scope of this study to answer. ⌐ 2000 Taylor & Francis.

  • 39.
    Kovacsovics, Bea
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Radiology. Östergötlands Läns Landsting, Centre for Medical Imaging, Department of Radiology UHL.
    Davidsson, L
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Radiology. Östergötlands Läns Landsting, Centre for Medical Imaging, Department of Radiology UHL.
    Harder, H
    Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Magnusson, Bengt
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Three-dimensional fast spin echo T2 weighted MR imagaes of the cerebellopontine angle and inner ear.2002In: Neurootol Newslett, ISSN 1023-6422, Vol. 6, p. 33-36Article in journal (Refereed)
  • 40.
    Kovacsovics, Bea
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Radiology. Östergötlands Läns Landsting, Centre for Medical Imaging, Department of Radiology UHL.
    Davidsson, L
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Radiology. Östergötlands Läns Landsting, Centre for Medical Imaging, Department of Radiology UHL.
    Harder, Lena
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Magnusson, Bengt
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    MRI screening of the cerebellopontine angel and inner ear with fast spin echo T" technique.2000In: Archives Italiennes de Biologie, ISSN 0003-9829, Vol. 138, p. 87-92Article in journal (Refereed)
  • 41.
    Kovacsovics, Bea
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Radiology. Östergötlands Läns Landsting, Centre for Medical Imaging, Department of Radiology UHL.
    Schulin, M
    Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Rask-Andersen, H
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Large vestibular aqueduct syndrome2001In: Neuroradiology,2001, 2001, p. 81-81Conference paper (Refereed)
  • 42. Kovacsovics, Bea
    et al.
    Schulin, Mickael
    Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Tág aquaeductus vestibuli szindroma (Négy eset ismertetése és irodalmi feldolgozás)2001In: Ful-orr-gegegyogyaszat, ISSN 0016-237X, Vol. 47Article in journal (Other academic)
  • 43.
    Kovasovics, Bea
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Radiology. Östergötlands Läns Landsting, Centre for Medical Imaging, Department of Radiology UHL.
    Harder, Henrik
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Magnusson, B
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Tillväxtmått hos akustikusneurinom2000In: Svensk ÖNH tidskrift, ISSN 1400-0121, Vol. 1, p. 17-18Article in journal (Other (popular science, discussion, etc.))
  • 44.
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Clinical investigation of the vertiginous patient.2000In: Sotilaslaaketieteellinen aikakanslehti, ISSN 0300-8797, Vol. 75, p. 107-111Article in journal (Refereed)
  • 45.
    Ledin, Torbjörn
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Fransson, Per-Anders
    Öron Lund.
    Hafström, Anna
    Öron Lund.
    Magnusson, Måns
    Öron Lund.
    Proprioceptiv och muskulär påverkan av människans balanskontroll. Effekter av nackposition, viktbelastning och muskulär uttröttning2003In: Svensk ÖNH tidskrift, ISSN 1400-0121, Vol. 10, p. 11-12Article in journal (Other academic)
  • 46.
    Ledin, Torbjörn
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Hafström, A
    Lun.
    Fransson, P.A
    Lund.
    Magnusson, M
    Lund.
    Influence of neck proprioception on vibration-induced postural sway2003In: Acta Oto-Laryngologica, ISSN 0001-6489, E-ISSN 1651-2251, Vol. 123, no 5, p. 594-599Article in journal (Refereed)
    Abstract [en]

    Objective - Several reports have shown that the direction of the postural responses induced by vestibular stimulation is affected by the positions of the neck and torso. The aim of this study was to investigate whether the postural responses to vibratory proprioceptive stimulation of the calf muscles are affected by the position of the head and thus by proprioceptive and vestibular information from the neck and head. Material and Methods - Ten normal subjects were exposed to vibratory proprioceptive stimulation of the calf muscles when the head was maintained in five different positions: in a neutral position facing forwards, with the head turned to the right or left sides or with the head tilted backwards or forwards. Body movements were evaluated by analyzing the anteroposterior and lateral torques induced towards the supporting surface. Results - The analysis showed that only the anteroposterior body sway was significantly affected by the position of the head. The anteroposterior postural responses were primarily increased during the tests with the head tilted backwards or forwards, whereas the postural responses were unaffected by head torsion towards the sides. The lateral responses were primarily affected by vision and not by the position of the head. Conclusions - The findings suggest that the responses evoked by vibratory proprioceptive stimulation of the calf muscles may be affected by different mechanisms, either by purely proprioceptive information or by an interaction between proprioceptive and vestibular information. Moreover, the increasing difference between the test conditions over time suggests that fatigue of the neck muscles may be one of the factors affecting the responses induced by the perturbations.

  • 47. Lervik, Julia
    et al.
    Schulin, Mikael
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Kaosanalys av ståendet hos äldre2001In: Svensk ÖNH tidskrift, ISSN 1400-0121, Vol. 2Article in journal (Other academic)
  • 48.
    Lundquist, Per-Gotthard
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Andersson, Rolf
    Effect of carbon dioxide on cochlear blood flow in guinea pigs2000In: Acta Oto-Laryngologica, ISSN 0001-6489, E-ISSN 1651-2251, Vol. 120, no 1, p. 11-18Article in journal (Refereed)
    Abstract [en]

    The influence of carbon dioxide (CO2) on cochlear blood flow (CBF), blood pressure (SBP) and skin blood flow (SBF) was studied in anaesthetized guinea pigs. A transient acute respiratory acidosis was produced by inhalation of CO2 and oxygen (O2) gas mixtures. The blood flows were measured by laser Doppler flowmetry (LDF). High CO2 increased CBF and SBP, and decreased SBF in a dose-dependent manner. The responses of CBF, SBP and SBF to high CO2 were reversible. Our results indicate that high CO2 (and low pH) dilates the smooth muscle of the blood vessels, resulting in an increase in CBF. CO2 also activates the sympathetic nervous system in the whole body, producing an increase in SBP. The distribution of alpha- adrenergic fibres/receptors is abundant in skin and scarce in the cochlea. The constrictive effect on blood vessels is much greater in the skin than in the cochlea, thus our results showed a decrease in SBF during stimulation with higher CO2.

  • 49.
    Lysholm, Marketta
    et al.
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Orthopaedics and Sports Medicine.
    Ledin, Torbjörn
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Ödkvist, LM
    Good, Lars
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Orthopaedics and Sports Medicine. Östergötlands Läns Landsting, Orthopaedic Centre, Department of Orthopaedics Linköping.
    Postural control - a comparison between healthy individuals and chronic anterior cruciate ligament injured patients2002In: Neurootol Newslett, ISSN 1023-6422, Vol. 6, p. 39-46Article in journal (Refereed)
  • 50.
    Magnusson, Bengt
    Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion, Oto-Rhiono-Laryngology and Head & Neck Surgery. Östergötlands Läns Landsting, RC - Rekonstruktionscentrum, ÖNH - Öron- Näsa- Halskliniken.
    Functions of the mastoid cell system: Auto-regulation of temperature and gas pressure2003In: Journal of Laryngology and Otology, ISSN 0022-2151, E-ISSN 1748-5460, Vol. 117, no 2, p. 99-103Article in journal (Refereed)
    Abstract [en]

    This article presents a new approach to understanding the physiological functions of the mastoid cell system. It is suggested that the cell system, in combination with the continuous blood flow through the adjacent large vessels, makes up a compound functional unit that serves to protect the sensitive vestibular part of the inner ear from inadequate stimulation by external temperature changes. By virtue of the large surface area of the cell system mucosa with respect to the enclosed gas volume, the mastoid cell system may also work as a pressure regulator. Variations of the bi-directional exchange of fluid over the capillary network in the mucosa will change the size of the lumen that is available for the gas in the cell system. Volumes of gas and fluid can thus be exchanged to keep the intratympanic pressure within physiological limits. The process is most effective in a cell system with a high area-to-volume ratio.

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