Document Detail

Perception of across-frequency asynchrony by listeners with cochlear hearing loss.
MedLine Citation:
PMID:  23612740     Owner:  NLM     Status:  MEDLINE    
Cochlear hearing loss is often associated with broader tuning of the cochlear filters. Cochlear response latencies are dependent on the filter bandwidths, so hearing loss may affect the relationship between latencies across different characteristic frequencies. This prediction was tested by investigating the perception of synchrony between two tones exciting different regions of the cochlea in listeners with hearing loss. Subjective judgments of synchrony were compared with thresholds for asynchrony discrimination in a three-alternative forced-choice task. In contrast to earlier data from normal-hearing (NH) listeners, the synchronous-response functions obtained from the hearing-impaired (HI) listeners differed in patterns of symmetry and often had a very low peak (i.e., maximum proportion of "synchronous" responses). Also in contrast to data from NH listeners, the quantitative and qualitative correspondence between the data from the subjective and the forced-choice tasks was often poor. The results do not provide strong evidence for the influence of changes in cochlear mechanics on the perception of synchrony in HI listeners, and it remains possible that age, independent of hearing loss, plays an important role in temporal synchrony and asynchrony perception.
Magdalena Wojtczak; Jordan A Beim; Christophe Micheyl; Andrew J Oxenham
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, N.I.H., Extramural     Date:  2013-04-24
Journal Detail:
Title:  Journal of the Association for Research in Otolaryngology : JARO     Volume:  14     ISSN:  1438-7573     ISO Abbreviation:  J. Assoc. Res. Otolaryngol.     Publication Date:  2013 Aug 
Date Detail:
Created Date:  2013-07-09     Completed Date:  2014-03-26     Revised Date:  2014-08-03    
Medline Journal Info:
Nlm Unique ID:  100892857     Medline TA:  J Assoc Res Otolaryngol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  573-89     Citation Subset:  IM    
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MeSH Terms
Acoustic Stimulation / methods*
Aging / physiology
Auditory Perception / physiology*
Auditory Threshold / physiology*
Biomechanical Phenomena / physiology
Choice Behavior / physiology
Hearing Loss, Sensorineural / physiopathology*
Middle Aged
Reaction Time / physiology*
Task Performance and Analysis
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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