Gestalt closure and the human visual evoked cortical potential.

Previous research examined the relationship between perceptual psychological content and the human visual evoked cortical potential (VECP). Each study suffered a common methodological problem. The stimuli's properties covaried with their perceptual-psychological content. To circumvent this problem, VECP's were recorded before and after Ss (14 men and women) "closed" Gestalt figures. A small, consistent increase in amplitude was observed after figures were organized.