Intra-operative monitoring of lower extremity motor-evoked potentials by direct cortical stimulation. Categories: Neurophysiologic Monitoring - Intracranial Author: Fujii M, Goto H, Ideguchi M, Imoto H, Ishihara H, Kajiwara K, Kato S, Koizumi H, Maruta Y, Nomura S, Oka F, Shirao S, Suehiro E, Suzuki M, Yoneda H, Yoshikawa K