Motor brain mapping with polygraphic recording of EMG responses and of cerebral activity

Functional brain mapping is performed during resection of intracerebral tumors involving motor regions to identify cortical areas and subcortical tracts evoking motor responses when electrically stimulated. In this study we describe the parallel recording of multiple motor evoked responses with electromyographic technique and of cerebral activity with electrocorticographic and electroencephalographic techniques, as a guide for the neurosurgeon relying onto motor brain mapping during resection of intracerebral tumors.