Comparison of descending volleys evoked by transcranial and epidural motor cortex stimulation in a conscious patient with bulbar pain. - Lazzaro,V Di.; Oliviero,A.; Pilato,F.; Saturno,E.; Dileone,M.; Meglio,M.; Cioni,B.; Papacci,F.; Tonali,P.A.; Rothwell,J.C. (Clin Neurophysiol, 2004)