41. Surgical options are DREZ ( dorsal root entry zone ) lesion and MCS or Motor Cortex Stimulation. 42. He was paralyzed on his right side, indicating the left side of his motor cortex was damaged. 43. The researchers used tiny electrodes to excite individual brain cells in the motor cortex of anesthetized rats. 44. Located anterior to the primary motor cortex 45. The term " M1 " and the term " primary motor cortex " are often used interchangeably. 46. This simplification suggests that lesions of the motor cortex will give rise to specific deficits in specific muscles. 47. The primary motor cortex is located on the precentral gyrus and is often visualized as the motor homunculus. 48. Branches of the middle cerebral artery provide most of the arterial blood supply for the primary motor cortex . 49. The primary site of action appears to be the motor cortex where spread of seizure activity is inhibited. 50. This auditory ( or tonotopic ) map is similar to the homunculus map of the primary motor cortex .
