Figure 3

Clusters of electrocortical source equivalent current dipoles localized to the (1: orange) supplementary motor area, (2: purple) left dorsal premotor area, (3: magenta) right dorsal premotor area, (4: blue) posterior cingulate, (5: yellow) posterior parietal, (6: brown) anterior cingulate, and (7: green) visual cortex. Two dipole models are shown; (top) the model best fitting the EEG signals during ankle exercises and (bottom) knee exercises. Small spheres indicate dipole locations for single electrocortical sources for single subjects; larger spheres indicate geometric cluster centroids