Figure 4

Topographical SP and SCD maps of the N170 to face and house images at each angle of orientation. (A.) Scalp Potential (SP) and (B.) Scalp Current Density (SCD) maps, arranged as 3 dimensional images as viewed from the left posterior top, illustrate SP and SCD topographical distribution of the N170 at its peak maximum for face (first column) and house (second column) images at each angle of orientation. Color grading of SCD maps shows areas with current sinks (negative) indicated with the red arrows, and areas with current sources (positive) with the blue arrow.