Figure 5.

Site-dependency of evoked muscle field. a, The muscle field size (i.e., the number of muscles significantly recruited by cortical stimulation) was significantly larger (t test, p ≪ 0.01) for single-pulse stimulations in M1 (dark bar) than for stimulations in PM (light bar). b, The intensity dependence of the field size for M1 (circles) and PM (triangles) stimulation as a function of stimulation amplitude. Error bars are provided for each stimulation value, and asterisks denote significant differences in the mean field size between M1 and PM sites.