Introduction of TCEMEP. Anatomy and Physiology of the Motor System Regarding TCEMEP. Before doing and interpreting the waveform signals of TCEMEP. Figure 1– Multiple areas of the cortex are involved in motor movements. In addition to the cortex, there also exist multiple subcortical areas. During artificial simulation under anesthetics, the corticospinal fibers are the main … Continue reading TCEMEP-Anatomy and Physiology of the Motor System . As a clinician we should know the backup theory of this evoked responses.