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Increased activity in frontal motor cortex compensates impaired speech perception in older adults
Du, Yi1,2; Buchsbaum, Bradley R.1,3; Grady, Cheryl L.1,3; Alain, Claude1,3
2016-08-01
Source PublicationNature Communications
Correspondent Emailduyi@psych.ac.cn
ISSN2041-1723
SubtypeArticle
Volume7Issue:0Pages:1-12
AbstractUnderstanding speech in noisy environments is challenging, especially for seniors. Although evidence suggests that older adults increasingly recruit prefrontal cortices to offset reduced periphery and central auditory processing, the brain mechanisms underlying such compensation remain elusive. Here we show that relative to young adults, older adults show higher activation of frontal speech motor areas as measured by functional MRI during a syllable identification task at varying signal-to-noise ratios. This increased activity correlates with improved speech discrimination performance in older adults. Multivoxel pattern classification reveals that despite an overall phoneme dedifferentiation, older adults show greater specificity of phoneme representations in frontal articulatory regions than auditory regions. Moreover, older adults with stronger frontal activity have higher phoneme specificity in frontal and auditory regions. Thus, preserved phoneme specificity and upregulation of activity in speech motor regions provide a means of compensation in older adults for decoding impoverished speech representations in adverse listening conditions.
Subject Area老年心理学
DOI10.1038/ncomms12241
Indexed BySCI
Language英语
Funding OrganizationCanadian Institutes of Health Research(MOP106619)
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000380855800001
WOS HeadingsScience & Technology
WOS KeywordAGE-RELATED-CHANGES ; AUDITORY-CORTEX ; NOISE ; RECOGNITION ; REPRESENTATIONS ; ORGANIZATION ; MEMORY ; DEDIFFERENTIATION ; CONNECTIVITY ; PERFORMANCE
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/20332
Collection认知与发展心理学研究室
Corresponding AuthorDu, Yi; Alain, Claude
Affiliation1.Baycrest Ctr Geriatr Care, Rotman Res Inst, Toronto, ON M6A 2E1, Canada
2.Chinese Acad Sci, Inst Psychol, Beijing 100101, Peoples R China
3.Univ Toronto, Dept Psychol, Toronto, ON M8V 2S4, Canada
Recommended Citation
GB/T 7714
Du, Yi,Buchsbaum, Bradley R.,Grady, Cheryl L.,et al. Increased activity in frontal motor cortex compensates impaired speech perception in older adults[J]. Nature Communications,2016,7(0):1-12.
APA Du, Yi,Buchsbaum, Bradley R.,Grady, Cheryl L.,&Alain, Claude.(2016).Increased activity in frontal motor cortex compensates impaired speech perception in older adults.Nature Communications,7(0),1-12.
MLA Du, Yi,et al."Increased activity in frontal motor cortex compensates impaired speech perception in older adults".Nature Communications 7.0(2016):1-12.
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