Age differences in the neuroelectric adaptation to meaningful sounds.

Much of what we know regarding the effect of stimulus repetition on neuroelectric adaptation comes from studies using artificially produced pure tones or harmonic complex sounds. Little is known about the neural processes associated with the representation of everyday sounds and how these may be aff...

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Autores principales:	Ada W S Leung, Yu He, Cheryl L Grady, Claude Alain
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2b581c5d30cd4d68b3b70fd08beb81cd
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spelling	oai:doaj.org-article:2b581c5d30cd4d68b3b70fd08beb81cd2021-11-18T09:02:59ZAge differences in the neuroelectric adaptation to meaningful sounds.1932-620310.1371/journal.pone.0068892https://doaj.org/article/2b581c5d30cd4d68b3b70fd08beb81cd2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23935900/?tool=EBIhttps://doaj.org/toc/1932-6203Much of what we know regarding the effect of stimulus repetition on neuroelectric adaptation comes from studies using artificially produced pure tones or harmonic complex sounds. Little is known about the neural processes associated with the representation of everyday sounds and how these may be affected by aging. In this study, we used real life, meaningful sounds presented at various azimuth positions and found that auditory evoked responses peaking at about 100 and 180 ms after sound onset decreased in amplitude with stimulus repetition. This neural adaptation was greater in young than in older adults and was more pronounced when the same sound was repeated at the same location. Moreover, the P2 waves showed differential patterns of domain-specific adaptation when location and identity was repeated among young adults. Background noise decreased ERP amplitudes and modulated the magnitude of repetition effects on both the N1 and P2 amplitude, and the effects were comparable in young and older adults. These findings reveal an age-related difference in the neural processes associated with adaptation to meaningful sounds, which may relate to older adults' difficulty in ignoring task-irrelevant stimuli.Ada W S LeungYu HeCheryl L GradyClaude AlainPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 7, p e68892 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ada W S Leung Yu He Cheryl L Grady Claude Alain Age differences in the neuroelectric adaptation to meaningful sounds.
description	Much of what we know regarding the effect of stimulus repetition on neuroelectric adaptation comes from studies using artificially produced pure tones or harmonic complex sounds. Little is known about the neural processes associated with the representation of everyday sounds and how these may be affected by aging. In this study, we used real life, meaningful sounds presented at various azimuth positions and found that auditory evoked responses peaking at about 100 and 180 ms after sound onset decreased in amplitude with stimulus repetition. This neural adaptation was greater in young than in older adults and was more pronounced when the same sound was repeated at the same location. Moreover, the P2 waves showed differential patterns of domain-specific adaptation when location and identity was repeated among young adults. Background noise decreased ERP amplitudes and modulated the magnitude of repetition effects on both the N1 and P2 amplitude, and the effects were comparable in young and older adults. These findings reveal an age-related difference in the neural processes associated with adaptation to meaningful sounds, which may relate to older adults' difficulty in ignoring task-irrelevant stimuli.
format	article
author	Ada W S Leung Yu He Cheryl L Grady Claude Alain
author_facet	Ada W S Leung Yu He Cheryl L Grady Claude Alain
author_sort	Ada W S Leung
title	Age differences in the neuroelectric adaptation to meaningful sounds.
title_short	Age differences in the neuroelectric adaptation to meaningful sounds.
title_full	Age differences in the neuroelectric adaptation to meaningful sounds.
title_fullStr	Age differences in the neuroelectric adaptation to meaningful sounds.
title_full_unstemmed	Age differences in the neuroelectric adaptation to meaningful sounds.
title_sort	age differences in the neuroelectric adaptation to meaningful sounds.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/2b581c5d30cd4d68b3b70fd08beb81cd
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_version_	1718420954082705408

Age differences in the neuroelectric adaptation to meaningful sounds.

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