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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
发表期刊Nature Communications
通讯作者邮箱duyi@psych.ac.cn
ISSN2041-1723
文章类型Article
卷号7期号:0页码:1-12
摘要Understanding 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.
学科领域老年心理学
DOI10.1038/ncomms12241
收录类别SCI
语种英语
项目资助者Canadian Institutes of Health Research(MOP106619)
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000380855800001
WOS标题词Science & Technology
关键词[WOS]AGE-RELATED-CHANGES ; AUDITORY-CORTEX ; NOISE ; RECOGNITION ; REPRESENTATIONS ; ORGANIZATION ; MEMORY ; DEDIFFERENTIATION ; CONNECTIVITY ; PERFORMANCE
引用统计
被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.psych.ac.cn/handle/311026/20332
专题认知与发展心理学研究室
通讯作者Du, Yi; Alain, Claude
作者单位1.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
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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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