Fig. 3.

Source locations for magnetic responses from all subjects during (a) the figure viewing task, (b) digit viewing task, and (c) calculation task on a schematic brain according to Talairach’ s human atlas (1988). Red circles in the calculation task (C) were calculation-related source locations. The source locations on the 3D MRI of each subject were projected onto the schematic brain. The numbers indicate the peak latencies (ms) of the activations. Interindividual difference was observed in the number of dipoles. Each black circle indicates the assumed dipole location during each task from all subjects.