Mechanism of higher brain function studied with human electrocorticograms

人类大脑的高级功能一直被认为是大脑中广泛的区域皮质功能的总和。因此，从皮层脑电(ECoG)中解码人类意图需要使用栅极对大脑大范围内的电信号进行采样。为了验证这一假说，我们使用功能磁共振对与句子处理相关的大脑区域进行了研究，并使用皮层脑电对隐蔽发音过程中单个元音的神经解码进行了研究。然而，我们的研究表明，皮层脑电的区别性信息将从特定皮质区域的非常有限的电极中获得，从中可以推断出他的选择意图。

Higher brain function of human has been thought summation of regional cortical functions in a wide range of the brain. Therefore, decoding of human intention from electrocorticogram (ECoG) would require sampling of the electrical signals over wide range of the brain using grid electrodes. To investigate this hypothesis we conducted studies on brain areas associated with sentence processing using functional MRI and on the neural decoding of single vowels during covert articulation using ECoG. Our study, however, indicated that the discriminative information of ECoG, from which his intention of choice could be extrapolate, would be obtained from very limited number of electrodes on the specific cortical areas.