The problems of visual perception whole object are considered in the paper. As an objective method to explore these issues, are used as incentives figure in subjective contours - Kanizs figures. The survey was attended by eight healthy men (SFU students and staff), right-handed, aged 22 to 35 years. The results of analysis of variance characteristics visual EP, recorded in the perception of different figures, showed that significant differences were found when comparing the real and illusory form with a figure control.
Keywords: Visual perception, Kanizs figures, evoked potentials (EP), dispersion