Fig. 1.

Masks in the primary motor cortex (M1). A) Pictorial representation of the human body map in the right M1 (obtained from http://www.grandesimagenes.com/homunculo/). Each color indicates a mask within M1. B) Number of voxels per mask is roughly equivalent; C) Number of slices in the sagittal plane within the masks; D) Maximum distance between the voxels per mask. (For interpretation of the references to color in this figure, the reader is referred to the web version of this article.)