Evidence for reactive magnetic 10-Hz rhythm in the human auditory cortex
Evidence for reactive magnetic 10-Hz rhythm in the human auditory cortex
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DOI：
10.1016/s0304-3940(97)13361-4
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发表时间：
1997-01-31
影响因子：
2.5
通讯作者：
Hari, R
中科院分区：
文献类型：
--
作者：
Lehtela, L;Salmelin, R;Hari, R
我们测试了一个假设，即人类听觉皮层中的神经元在10赫兹左右自发振荡，这种活动（“tau”节奏）受到听觉输入的影响。研究人员用122通道全头皮神经磁强计记录健康成年人的皮层活动，同时给他们播放500毫秒的单声白噪声。利用时间谱演化方法研究了整个皮层自发振荡的反应性。来自上颞叶的6.5-9.5 Hz振荡活动被声音暂时抑制。我们的研究结果支持在人类颞叶皮层中存在一种独特的反应性听觉节奏。(C) 1997爱思唯尔科学爱尔兰有限公司
We tested the hypothesis that neurons in the human auditory cortex show spontaneous oscillations around 10 Hz, and that this activity ('tau' rhythm) is affected by auditory input. Cortical activity was recorded with a 122-channel whole-scalp neuromagnetometer from healthy adults while they were presented with monaural 500-ms bursts of white noise. The reactivity of spontaneous oscillations was studied over the whole cortex using the Temporal Spectral Evolution method. Oscillatory 6.5-9.5 Hz activity, with sources in the superior temporal lobes, was transiently suppressed by the sounds in eight out of nine subjects. Our results support the existence of a distinct, reactive auditory rhythm in the human temporal cortex. (C) 1997 Elsevier Science Ireland Ltd.