期刊
NEUROREPORT
卷 18, 期 7, 页码 645-648出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/WNR.0b013e3280d943b9
关键词
auditory cortex; cross-sensory plasticity; deafness; somatosensory; vibrotactile
资金
- NIA NIH HHS [P50 AG005142] Funding Source: Medline
- NIDCD NIH HHS [R01 DC008308, R01DC04856, R01DC008308, R01 DC004856] Funding Source: Medline
- PHS HHS [P50AGO5142] Funding Source: Medline
Neuroplastic changes in auditory cortex as a result of lifelong perceptual experience were investigated. Adults with early-onset deafness and long-term hearing aid experience were hypothesized to have undergone auditory cortex plasticity due to somatosensory stimulation. Vibrations were presented on the hand of deaf and normal-hearing participants during functional MRI. Vibration stimuli were derived from speech or were a fixed frequency. Higher, more widespread activity was observed within auditory cortical regions of the deaf participants for both stimulus types. Life-long somatosensory stimulation due to hearing aid use could explain the greater activity observed with deaf participants.
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