Figure 3
From: Intraoperative electrocortical stimulation of Brodman area 4: a 10-year analysis of 255 cases

(A) Individual compound muscle action potential (CMAP) with a: stimulation artifact; b: latency (in ms); c: potential width (in ms) and d: amplitude (in μV). (B) The potential curve for course monitoring, starting with an individual basal value (t0), is registered on a separate time axis.