liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Early ERP signature of hearing impairment in visual rhyme judgment
Linköping University, The Swedish Institute for Disability Research. Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences. (Linnaeus Centre HEAD)
Linköping University, The Swedish Institute for Disability Research. Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences. (Linnaeus Centre HEAD)
Linköping University, The Swedish Institute for Disability Research. Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences. (Linnaeus Centre HEAD)
Linköping University, The Swedish Institute for Disability Research. Linköping University, Department of Behavioural Sciences and Learning, Disability Research. Linköping University, Faculty of Arts and Sciences. (Linnaeus Centre HEAD)
2013 (English)In: Frontiers in Psychology, ISSN 1664-1078, E-ISSN 1664-1078, Vol. 4, no 241Article in journal (Refereed) Published
Abstract [en]

Postlingually acquired hearing impairment (HI) is associated with changes in the representation of sound in semantic long-term memory. An indication of this is the lower performance on visual rhyme judgment tasks in conditions where phonological and orthographic cues mismatch, requiring high reliance on phonological representations. In this study, event-related potentials (ERPs) were used for the first time to investigate the neural correlates of phonological processing in visual rhyme judgments in participants with acquired HI and normal hearing (NH). Rhyme task word pairs rhymed or not and had matching or mismatching orthography. In addition, the inter-stimulus interval (ISI) was manipulated to be either long (800 ms) or short (50 ms). Long ISIs allow for engagement of explicit, top-down processes, while short ISIs limit the involvement of such mechanisms. We hypothesized lower behavioral performance and N400 and N2 deviations in HI in the mismatching rhyme judgment conditions, particularly in short ISI. However, the results showed a different pattern. As expected, behavioral performance in the mismatch conditions was lower in HI than in NH in short ISI, but ERPs did not differ across groups. In contrast, HI performed on a par with NH in long ISI. Further, HI, but not NH, showed an amplified N2-like response in the non-rhyming, orthographically mismatching condition in long ISI. This was also the rhyme condition in which participants in both groups benefited the most from the possibility to engage top-down processes afforded with the longer ISI. Taken together, these results indicate an early ERP signature of HI in this challenging phonological task, likely reflecting use of a compensatory strategy. This strategy is suggested to involve increased reliance on explicit mechanisms such as articulatory recoding and grapheme-to-phoneme conversion.

Place, publisher, year, edition, pages
Switzerland: Frontiers Research Foundation , 2013. Vol. 4, no 241
Keyword [en]
event-related potentials, hearing impairment, phonology, visual rhyme judgment, inter-stimulus interval, N2, N400, FP
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-92284DOI: 10.3389/fpsyg.2013.00241ISI: 000330942000001OAI: oai:DiVA.org:liu-92284DiVA: diva2:620463
Available from: 2013-05-08 Created: 2013-05-08 Last updated: 2017-12-06Bibliographically approved
In thesis
1. Representing sounds and spellings: Phonological decline and compensatory working memory in acquired hearing impairment
Open this publication in new window or tab >>Representing sounds and spellings: Phonological decline and compensatory working memory in acquired hearing impairment
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Alternative title[sv]
Representationer av ljud och stavning : Försämrad fonologisk förmåga och kompensatoriskt arbetsminne vid förvärvad hörselnedsättning
Abstract [en]

This thesis examined phonological processing in adults with postlingually acquired moderate-to-severe hearing impairment (HI) and whether explicit working memory processing of phonology and individual working memory capacity (WMC) can compensate for degraded phonological representations in this group (papers I-III). A second aim was to provide reference data for a test of WMC, the reading span test, and to examine the relation between reading span test performance and speech recognition in noise in a larger sample of 50-89 year olds with HI (paper IV). Non-auditory tasks of phonological processing, episodic long-term memory and WMC were used in papers I-III, and both behavioral and electrophysiological measures were collected. Results showed that phonological processing was impaired in the group with HI but that WMC and explicit working memory processing of phonology could be employed to compensate for degraded phonological representations. However, this compensation may come at the cost of interfering with episodic memory encoding. An  electrophysiological marker of HI in text-based rhyme judgments was found. Paper IV presented reference data for reading span test performance in two versions of the test in individuals with HI, and results suggesting that WMC may be differentially predictive of speech recognition in noise in different age groups of older adults with HI. The clinical implications of the present results concerns the double disadvantage of individuals with lower WMC and HI. A structured assessment of WMC in rehabilitative settings would help to identify these individuals and tailor treatment to their needs. The reading span test is suggested as a suitable future candidate for clinical WMC assessment.

Abstract [sv]

I denna avhandling undersöktes fonologiska processer hos personer med postlingualt förvärvad, måttlig till mycket grav hörselnedsättning (HNS) och om inkoppling av explicit bearbetning av fonologi eller individuell arbetsminneskapacitet kan kompensera för försämrade ljudminnen i denna grupp (studie I-III). Ett andra syfte var att sammanställa referensdata för ett test av arbetsminneskapacitet, lässpann, och undersöka relationen mellan prestation på lässpann ochigenkänning av tal-i-brus i en större grupp av 50-89 åriga personer  med HNS (studie IV). Icke-auditiva test av fonologisk förmåga, episodiskt långtidsminne och arbetsminneskapacitet användes i studie I-III och både beteendedata och elektrofysiologiska data samlades in. Resultaten visade på försämrad fonologisk förmåga i gruppen med HNS men också att explicit bearbetning av fonologi och arbetsminneskapacitet kunde användas för att kompensera för försämrade fonologiska representationer i denna grupp. Denna kompensation kan dock ske på bekostnad av att inkodning i episodiska långtidsminnet störs. Vidare identifierades en elektrofysiologisk markör för HNS i en textbaserad rimuppgift. I studie IV presenterades referensdata i två versioner av lässpanntestet för personer med mild till mycket grav HN och resultat som pekar mot möjliga skillnader mellan olika åldersgrupper i hur väl arbetsminneskapacitet predicerar igenkänning av tal-i-brus. Kliniska implikationer rör den dubbla belastning det innebär att ha både en HN och relativt sänkt arbetsminneskapacitet. En strukturerad bedömning av arbetsminneskapacitet i samband med rehabilitering skulle kunna bidra till att synliggöra dessa personer och anpassa insatser efter deras behov. Lässpanntestet är ett test som i framtiden skulle kunna vara användbart i det sammanhanget.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2013. 57 p.
Series
Linköping Studies in Arts and Science, ISSN 0282-9800 ; 591Studies from the Swedish Institute for Disability Research, ISSN 1650-1128 ; 54
Keyword
Acquired hearing impairment, phonology, WMC, reading span, Förvärvad hörselnedsättning, fonologi, arbetsminne, lässpann
National Category
Medical and Health Sciences Social Sciences
Identifiers
urn:nbn:se:liu:diva-99786 (URN)10.3384/diss.diva-99786 (DOI)978-91-7519-500-1 (ISBN)
Public defence
2013-11-08, I:101, Hus I, Campus Valla, Linköpings universitet, Linköping, 13:00 (English)
Opponent
Supervisors
Available from: 2013-10-21 Created: 2013-10-21 Last updated: 2013-10-30Bibliographically approved

Open Access in DiVA

fulltext(1882 kB)348 downloads
File information
File name FULLTEXT01.pdfFile size 1882 kBChecksum SHA-512
d69ae7b1118f66a0ce16d6dda755fb6f2809d68ec791b24aff1c29724c80687d986a55418d6cd215b71a4e19bb2dea4186ec9a655a0201583652cb5cab3ada78
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Authority records BETA

Classon, ElisabetRudner, MaryRönnberg, Jerker

Search in DiVA

By author/editor
Classon, ElisabetRudner, MaryRönnberg, Jerker
By organisation
The Swedish Institute for Disability ResearchDisability ResearchFaculty of Arts and Sciences
In the same journal
Frontiers in Psychology
Medical and Health Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 348 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 412 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf