Spatial distributions of evoked potentials associated with visual apparent movement

Spatio-temporal properties of evoked potentials associated with the perception of visual apparent movement were studied. Optimal stimulus conditions were obtained in the psychological measurement. Based upon the results, evoked potentials related to visual apparent movement were measured, and topographic maps were constructed to evaluate the active areas of visual apparent movement. The topographic maps show that parietal scalp regions are activated about 300msec after the onset of the second stimulus of the apparent stimulation. The results suggest that visual apparent movement occurs in the visual association area or higher levels in the central nervous system.