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Factors that introduce intrasubject variability into ear-canal absorbance measurements
Smith College, Northampton, Massachusetts, USA.
Linköpings universitet, Institutionen för klinisk och experimentell medicin, Teknisk audiologi. Linköpings universitet, Hälsouniversitetet.ORCID-id: 0000-0003-3350-8997
Boys Town National Research Hospital, Omaha, Nebraska, USA.
Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA.
2013 (engelsk)Inngår i: Ear and Hearing, ISSN 0196-0202, E-ISSN 1538-4667, Vol. 34, nr Supplement 1, 60s-64s s.Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Wideband immittance measures can be useful in analyzing acoustic sound flow through the ear and also have diagnostic potential for the identification of conductive hearing loss as well as causes of conductive hearing loss. To interpret individual measurements, the variability in test–retest data must be described and quantified. Contributors to variability in ear-canal absorbance–based measurements are described in this article. These include assumptions related to methodologies and issues related to the probe fit within the ear and potential acoustic leaks. Evidence suggests that variations in ear-canal cross-sectional area or measurement location are small relative to variability within a population. Data are shown to suggest that the determination of the Thévenin equivalent of the ER-10C probe introduces minimal variability and is independent of the foam ear tip itself. It is suggested that acoustic leaks in the coupling of the ear tip to the ear canal lead to substantial variations and that this issue needs further work in terms of potential criteria to identify an acoustic leak. In addition, test–retest data from the literature are reviewed.

sted, utgiver, år, opplag, sider
Lippincott Williams & Wilkins, 2013. Vol. 34, nr Supplement 1, 60s-64s s.
HSV kategori
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URN: urn:nbn:se:liu:diva-97727DOI: 10.1097/AUD.0b013e31829cfd64ISI: 000326278100011PubMedID: 23900183OAI: oai:DiVA.org:liu-97727DiVA: diva2:650606
Tilgjengelig fra: 2013-09-23 Laget: 2013-09-23 Sist oppdatert: 2017-12-06bibliografisk kontrollert

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