Figure 2. Source locations. (A–C) Magnetic resonance images showing the locations of equivalent current dipoles of the 1M, 2M, and 3M components following electrical stimulation of the first transverse palatine ridge (A), the third transverse palatine ridge (B), and the greater palatine foramen (C). Blue circles show the locations of equivalent current dipoles on frontal planes of magnetic resonance images. The equivalent current dipoles of 1M (left images) and 2M (middle images) are located in the post-central gyrus, and those of 3M (right images) are located in the upper bank of the Sylvian fissure. (D) Locations of contralateral equivalent current dipoles of 1M were superimposed on the three-dimensionally reconstructed magnetic resonance image of the individual’s brain. Solid lines indicate the central sulcus, the Sylvian fissure, and the great longitudinal fissure.