Age Differences in fMRI Adaptation for Sound Identity and Location
We explored age differences in auditory perception by measuring fMRI adaptation of brain activity to repetitions of sound identity (what) and location (where), using meaningful environmental sounds. In one condition, both sound identity and location were repeated allowing us to assess non-specific a...
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Frontiers Research Foundation
2011
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3061355/ |
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pubmed-30613552011-03-25 Age Differences in fMRI Adaptation for Sound Identity and Location Grady, Cheryl L. Charlton, Rebecca He, Yu Alain, Claude Neuroscience We explored age differences in auditory perception by measuring fMRI adaptation of brain activity to repetitions of sound identity (what) and location (where), using meaningful environmental sounds. In one condition, both sound identity and location were repeated allowing us to assess non-specific adaptation. In other conditions, only one feature was repeated (identity or location) to assess domain-specific adaptation. Both young and older adults showed comparable non-specific adaptation (identity and location) in bilateral temporal lobes, medial parietal cortex, and subcortical regions. However, older adults showed reduced domain-specific adaptation to location repetitions in a distributed set of regions, including frontal and parietal areas, and to identity repetition in anterior temporal cortex. We also re-analyzed data from a previously published 1-back fMRI study, in which participants responded to infrequent repetition of the identity or location of meaningful sounds. This analysis revealed age differences in domain-specific adaptation in a set of brain regions that overlapped substantially with those identified in the adaptation experiment. This converging evidence of reductions in the degree of auditory fMRI adaptation in older adults suggests that the processing of specific auditory “what” and “where” information is altered with age, which may influence cognitive functions that depend on this processing. Frontiers Research Foundation 2011-03-11 /pmc/articles/PMC3061355/ /pubmed/21441992 http://dx.doi.org/10.3389/fnhum.2011.00024 Text en Copyright © 2011 Grady, Charlton, He and Alain. http://www.frontiersin.org/licenseagreement This is an open-access article subject to an exclusive license agreement between the authors and Frontiers Media SA, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are credited. |
| repository_type |
Open Access Journal |
| institution_category |
Foreign Institution |
| institution |
US National Center for Biotechnology Information |
| building |
NCBI PubMed |
| collection |
Online Access |
| language |
English |
| format |
Online |
| author |
Grady, Cheryl L. Charlton, Rebecca He, Yu Alain, Claude |
| spellingShingle |
Grady, Cheryl L. Charlton, Rebecca He, Yu Alain, Claude Age Differences in fMRI Adaptation for Sound Identity and Location |
| author_facet |
Grady, Cheryl L. Charlton, Rebecca He, Yu Alain, Claude |
| author_sort |
Grady, Cheryl L. |
| title |
Age Differences in fMRI Adaptation for Sound Identity and Location |
| title_short |
Age Differences in fMRI Adaptation for Sound Identity and Location |
| title_full |
Age Differences in fMRI Adaptation for Sound Identity and Location |
| title_fullStr |
Age Differences in fMRI Adaptation for Sound Identity and Location |
| title_full_unstemmed |
Age Differences in fMRI Adaptation for Sound Identity and Location |
| title_sort |
age differences in fmri adaptation for sound identity and location |
| description |
We explored age differences in auditory perception by measuring fMRI adaptation of brain activity to repetitions of sound identity (what) and location (where), using meaningful environmental sounds. In one condition, both sound identity and location were repeated allowing us to assess non-specific adaptation. In other conditions, only one feature was repeated (identity or location) to assess domain-specific adaptation. Both young and older adults showed comparable non-specific adaptation (identity and location) in bilateral temporal lobes, medial parietal cortex, and subcortical regions. However, older adults showed reduced domain-specific adaptation to location repetitions in a distributed set of regions, including frontal and parietal areas, and to identity repetition in anterior temporal cortex. We also re-analyzed data from a previously published 1-back fMRI study, in which participants responded to infrequent repetition of the identity or location of meaningful sounds. This analysis revealed age differences in domain-specific adaptation in a set of brain regions that overlapped substantially with those identified in the adaptation experiment. This converging evidence of reductions in the degree of auditory fMRI adaptation in older adults suggests that the processing of specific auditory “what” and “where” information is altered with age, which may influence cognitive functions that depend on this processing. |
| publisher |
Frontiers Research Foundation |
| publishDate |
2011 |
| url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3061355/ |
| _version_ |
1611446289651728384 |