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Cortical asymmetries at different spatial hierarchies relate to phonological processing ability
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In: PLoS Biol (2022)
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Orthographic Influence on Spoken Word Identification: Behavioral and fMRI Evidence
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EEG Study of Effortful Listening
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In: ETSU Faculty Works (2017)
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Aging-Resilient Associations between the Arcuate Fasciculus and Vocabulary Knowledge: Microstructure or Morphology?
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Speech-perception training for older adults with hearing loss impacts word recognition and effort
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The Cingulo-Opercular Network Provides Word-Recognition Benefit
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Pupil size varies with word listening and response selection difficulty in older adults with hearing loss
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Inferior frontal sensitivity to common speech sounds is amplified by increasing word intelligibility
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Age-related relative volume preservation of the dominant hand cortical region
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Speech recognition in younger and older adults: a dependency on low-level auditory cortex
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Abstract:
A common complaint of older adults is difficulty understanding speech, especially in challenging listening environments. In addition to well known declines in the peripheral auditory system that reduce audibility, age-related changes in central auditory and attention-related systems are hypothesized to have additive negative effects on speech recognition. We examined the extent to which functional and structural differences in speech- and attention-related cortex predicted differences in word recognition between 18 younger adults (19–39 years) and 18 older adults (61–79 years). Subjects performed a word recognition task in an MRI scanner where the intelligibility of words was parametrically varied. Older adults exhibited significantly poorer word recognition in a challenging listening condition compared to younger adults. An anteromedial Heschl’s gyrus/superior temporal gyrus (HG/STG) region, engaged by the word recognition task, exhibited age group differences in gray matter volume and predicted word recognition in younger and older adults. Age group differences in anterior cingulate (ACC) activation were also observed. The association between HG gray matter volume, word recognition, and ACC activation was present after controlling for hearing loss. In younger and older adults, causal path modeling analyses demonstrated that individual variation in left HG/STG morphology affected word recognition performance, which was reflected by error monitoring activity in the dorsal ACC. These results have clinical implications for rehabilitation and suggest that some of the perceptual difficulties experienced by older adults are due to structural changes in HG/STG. More broadly, the results suggest the possibility that aging may exaggerate developmental limitations on the ability to recognize speech.
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Keyword:
Article
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URL: https://doi.org/10.1523/JNEUROSCI.0412-09.2009 http://www.ncbi.nlm.nih.gov/pubmed/19439585 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2717741
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Age-related relative volume preservation of the dominant hand cortical region
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In: Communication Sciences and Disorders Scholarship (2009)
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Selective Alterations of White Matter Associated with Visuospatial and Sensorimotor Dysfunction in Turner Syndrome
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Anatomical correlates of dyslexia: frontal and cerebellar findings
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