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Corticospinal direct response in humans: identification of the motor cortex during intracranial surgery under general
Y Katayama1, T Tsubokawa, S Maejima
1Department of Neurological Surgery, Nihon University School of Medicine, Tokyo, Japan.
Journal of Neurology, Neurosurgery, and Psychiatry
|January 1, 1988
Abstract:
The corticospinal direct (D) response to stimulation of the motor cortex exposed for intracranial surgery was recorded in 20 cases from wire electrodes inserted into the spinal epidural space. The D response was obtained from stimulation of restricted areas of the cerebral cortex, that is, the hand, trunk and thigh areas of the motor cortex. The D response was resistant to anaesthesia and unaffected by muscle relaxants. Thus, recordings of the D response are useful for identifying the location of the motor cortex during intracranial surgery under general anaesthesia.