Subdural Recording of Bereitschaftspotential Is Useful for Functional Mapping of the Epileptogenic Motor Area:
Subdural Recording of Bereitschaftspotential Is Useful for Functional Mapping of the Epileptogenic Motor Area:
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Bereitschaftspottial 的硬膜下记录对于癫痫运动区的功能映射很有用：
作者：
S. Yazawa;A. Ikeda;K. Terada;T. Mima;N. Mikuni;T. Kunieda;W. Taki;J. Kimura;H. Shibasaki
总结：1例26岁男性患者，从左侧眼轮匝肌强直性收缩开始出现难治性局灶性运动性癫痫发作，通过将硬膜下网格电极置于右侧外周皮质上进行长时间EEG监测。植入硬膜下电极的皮层电刺激显示出相对较低的后放电（ADS）阈值，但无法显示左上面的运动区，其中或附近的癫痫区域预计将存在。从硬膜下电极记录的Bereitschaftspotential与自主起搏的自主眨眼（眼睑闭合）相关，揭示了与左上面部的自主运动特别相关的运动区，该运动区最有可能埋在沟中。这一观察结果表明，从硬膜下电极记录Bereitschaftspotential是有用的映射运动皮层，特别是在具有低阈值的ADS到电刺激的局灶性运动癫痫发作的患者。
Summary: A 26‐year‐old man with intractable focal motor seizure beginning with tonic contraction of the left orbicularis oculi muscle had prolonged EEG monitoring with subdural grid electrodes placed over the right perirolandic cortex. Electrical stimulation of the cortex with implanted subdural electrodes showed a relatively low threshold for afterdischarges (ADS) but could not disclose the motor area for the left upper face where or near where the epileptogenic area was expected to be present. Bereitschaftspotential recorded from the subdural electrodes in association with self‐paced voluntary blink (eyelid closing) disclosed the motor area specifically related to voluntary movements of the left upper face, which was most likely buried in the sulcus. This observation suggests that recording of Bereitschaftspotential from subdural electrodes is useful for mapping the motor cortex, especially in patients with focal motor seizure with low threshold for ADS to electric stimuli.