Seminaire: Christian Fullgrabe, GIPSA-Lab, Grenoble, 6 juin 2013

[Thierry Hamon]

Date: Wed, 22 May 2013 11:51:55 +0200
From: Rosario Signorello <rosario.signorello at gipsa-lab.grenoble-inp.fr>
Message-ID: <CAGxnMbUpO-9iKUk2vYK45AAvZ17OYi3ujFtEneJuYVdHmV+xyQ at mail.gmail.com>
X-url: http://www.gipsa-lab.grenoble-inp.fr/animation/seminaires.php?id_sem=428

Bonjour à tous,
Monsieur Christian Fullgrabe du MRC - Institute of Hearing Research,
Nottingham, UK), viendra nous présenter ses travaux sur :

"Speech perception across the adult lifespan with clinically normal hearing"

Date : Jeudi 6 juin 2013 à 13h30
Lieu : GIPSA-lab, Département Parole & Cognition, salle B314 du site Ampère
Plan d'accès : http://www.gipsa-lab.grenoble-inp.fr/plan-d-acces.php

Résumé :
Subjective reports suggest that older persons experience increased
listening difficulties in noisy environments, and experimental
investigations seem to confirm this age-dependent deficit. However,
these listeners are generally unaware of their peripheral hearing status
(i.e., whether or not they have a hearing loss) and most published
studies used lax audiometric inclusion criteria. Hence, lower speech
intelligibility could be explained by a reduction in audibility with
age. Also, most studies limited their age comparison to groups of
"young" (e.g. ≤ 30 years) and "older" listeners (e.g. ≥ 60 years),
making it impossible to pinpoint the onset of the putative age effect.

This talk will present two cross-sectional investigations of central age
effects on speech perception, using participants with clinically normal
hearing over a fairly wide frequency range (≤ 20 dB HL for 0.125-4 kHz).
Performance on supra-threshold temporal-processing and a battery of
cognitive tasks (including tests of processing speed and working memory)
was assessed, and compared with speech identification in quiet and in
different (steady and fluctuating) background noises. To determine when
during adulthood a decline with age in these abilities first becomes
apparent, participants were sampled continuously from the entire adult
age range (18-91 years).

Despite a large individual variability, the results show an
age-dependent decline in speech identification, mainly above 60
years. Sensitivity to temporal information and cognitive performance
deteriorated as early as young middle age, and correlated with
speech-in-noise perception.

In conclusion, even when peripheral hearing sensitivity is clinically
normal, the identification of speech in noise declines with age, and
this deficit co-occurs with changes in retro-cochlear auditory
processing and cognitive functions.

Voici l'affichage virtuel du séminaire de M Christian Fullgrabe :
*http://www.gipsa-lab.grenoble-inp.fr/animation/seminaires.php?id_sem=428*

Pour plus d'informations sur les séminaires du Département parole et
cognition du GIPSA-lab :
http://www.gipsa-lab.grenoble-inp.fr/animation/seminaires.php?dep=dpc

Rosario Signorello
pour l'équipe séminaire du Département Parole et Cognition du GIPSA-lab

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