“…For example, Lewin and Phillips 97 reported that 3 patients with severe spontaneous pain experienced relief following surgical removal of the postcentral region where electrical stimulation evoked comparable pain. A review of the postcentral topectomy literature 44,48,64,65,66,68,92,93,97,161,163,176,182 reveals that 15 out of 25 (60%) postcentral ablations obtained permanent relief of pain; 6/25 provided temporary relief; and 4/25 were completely ineffective. A parsimonious interpretation of these reports is that permanent loss of pain was achieved when both area 3a and areas 3b/1 were removed.…”