CORTICAL SOURCE OF ALPHA-RHYTHM
CORTICAL SOURCE OF ALPHA-RHYTHM
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DOI：
10.1016/0304-3940(77)90024-6
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发表时间：
1977-01-01
影响因子：
2.5
通讯作者：
VANLEEUWEN, WS
中科院分区：
文献类型：
--
作者：
DASILVA, FHL;VANLEEUWEN, WS
在狗身上，使用沿垂直于皮质表面的方向放置的皮质内电极，研究了脑电阿尔法活动的皮质内来源的问题。用频谱分析量化了阿尔法节律，即计算了几个电极之间记录的阿尔法活动之间的相位关系。结果表明，在视皮层不同深度记录到的α节律之间存在相位相反的现象。在皮质面以下约1100μm处有位相反转现象。讨论了这种α活动的神经生理学基础。
The question of the intracortical sources of the alpha activity of the EEG has been investigated in dogs, using intracortical electrodes placed along a direction perpendicular to the cortical surface. Alpha rhythms have been quantified using spectral analysis, namely the phase relationships between alpha activities recorded between several electrodes has been computed. It was demonstrated that opposition of phase exists between alpha rhythms recorded at different depths within the visual cortex. The phase reversal (180°) was found at about 1100 μm below the cortical surface. The neurophysiological basis of such alpha activity is discussed.