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- W2085344019 abstract "Hearing loss has been linked to many types of cognitive decline in adults, including an association between hearing loss severity and dementia. However, it remains unclear whether cortical re-organization associated with hearing loss occurs in early stages of hearing decline and in early stages of auditory processing. In this study, we examined compensatory plasticity in adults with mild-moderate hearing loss using obligatory, passively-elicited, cortical auditory evoked potentials (CAEP). High density EEG elicited by speech stimuli was recorded in adults with hearing loss and age-matched normal hearing controls. Latency, amplitude and source localization of the P1, N1, P2 components of the CAEP were analyzed. Adults with mild-moderate hearing loss showed increases in latency and amplitude of the P2 CAEP relative to control subjects. Current density reconstructions revealed decreased activation in temporal cortex and increased activation in frontal cortical areas for hearing-impaired listeners relative to normal hearing listeners. Participants’ behavioral performance on a clinical test of speech perception in noise was significantly correlated with the increases in P2 latency. Our results indicate that changes in cortical resource allocation are apparent in early stages of adult hearing loss, and that these passively-elicited cortical changes are related to behavioral speech perception outcome." @default.
- W2085344019 created "2016-06-24" @default.
- W2085344019 creator A5083150229 @default.
- W2085344019 creator A5084701239 @default.
- W2085344019 date "2013-01-01" @default.
- W2085344019 modified "2023-10-16" @default.
- W2085344019 title "Compensatory changes in cortical resource allocation in adults with hearing loss" @default.
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- W2085344019 doi "https://doi.org/10.3389/fnsys.2013.00071" @default.
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