| Hearing loss severity: impaired processing of formant transition duration. | |
| | |
MedLine Citation:
|
PMID: 20600193 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Normal hearing listeners exploit the formant transition (FT) detection to identify place of articulation for stop consonants. Neuro-imaging studies revealed that short FT induced less cortical activation than long FT. To determine the ability of hearing impaired listeners to distinguish short and long formant transitions (FT) from vowels of the same duration, 84 mild to severe hearing impaired listeners and 5 normal hearing listeners were asked to detect 10 synthesized stimuli with long (200 ms) or short (40 ms) FT among 30 stimuli of the same duration without FT. Hearing impaired listeners were tested with and without hearing aids. The effect of the difficulty of the task (short/long FT) was analysed as a function of the hearing loss with and without hearing aids. Normal hearing listeners were able to detect every FT (short and long). For hearing impaired listeners, the detection of long FT was better than that of short ones irrespective of their degree of hearing loss. The use of hearing aids improved detection of both kinds of FT; however, the detection of long FT remained much better than the detection of the short ones. The length of FT modified the ability of hearing impaired patients to detect FT. Short FT had access to less cortical processing than long FT and cochlea damages enhanced this specific deficit in short FT brain processing. These findings help to understand the limit of deafness rehabilitation in the time domain and should be taken into account in future devices development. |
| | |
Authors:
|
A Coez; P Belin; E Bizaguet; E Ferrary; M Zilbovicius; Y Samson |
Related Documents
:
|
292143 - Methods for the evaluation of hearing aids. 2107853 - Referrals to a hearing aid clinic: scope for improvement. 16257433 - Macrobenthos community structural changes off cesenatico coast (emilia romagna, norther... |
Publication Detail:
|
Type: Journal Article Date: 2010-06-19 |
Journal Detail:
|
Title: Neuropsychologia Volume: 48 ISSN: 1873-3514 ISO Abbreviation: Neuropsychologia Publication Date: 2010 Aug |
Date Detail:
|
Created Date: 2010-08-02 Completed Date: 2010-11-22 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0020713 Medline TA: Neuropsychologia Country: England |
Other Details:
|
Languages: eng Pagination: 3057-61 Citation Subset: IM |
Copyright Information:
|
Copyright (c) 2010 Elsevier Ltd. All rights reserved. |
Affiliation:
|
CEA-INSERM U.1000 Neuroimaging and Psychiatry, Service Hospitalier Frédéric Joliot, IFR49, 4 Place du Général Leclerc, 91401 Orsay, France. acoez@noos.fr |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Acoustic Stimulation
/
methods Aged Aged, 80 and over Analysis of Variance Cognition Disorders / etiology* Female Hearing Aids Hearing Loss / complications* Humans Male Mental Processes / physiology* Middle Aged Neuropsychological Tests Psychoacoustics Reaction Time / physiology Severity of Illness Index |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Meaningfulness and global-local processing in schizophrenia.
Next Document: Information processing differences and similarities in adults with dyslexia and adults with Attentio...