Vibrotactile activation of the auditory cortices in deaf versus hearing adults
Vibrotactile activation of the auditory cortices in deaf versus hearing adults
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DOI：
10.1097/wnr.0b013e3280d943b9
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发表时间：
2007-05-07
期刊：
影响因子：
1.7
通讯作者：
Singh, Manbir
中科院分区：
文献类型：
--
作者：
Auer, Edward T., Jr.;Bernstein, Lynne E.;Singh, Manbir
研究了终生知觉经验对听觉皮质神经可塑性的影响。早发性耳聋和长期佩戴助听器的成年人被假设由于躯体感觉刺激而经历了听觉皮质的可塑性。在功能磁共振期间，聋人和听力正常的参与者的手部都出现了振动。振动刺激来自语音或为固定频率。在两种类型的刺激下，聋人参与者的听觉皮质区域都观察到了更高、更广泛的活动。由于使用助听器而产生的终生体感刺激可以解释聋人参与者观察到的更大的活动。
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.