The Negative After-Effect of the Perception of a Surface Slanted in the Third Dimension

Abstract

evidence for any underlying physiological process but only for a psychophysical principle called adaptation or normalization. Although the experimental facts seemed to be related, the implications drawn from them were radically different. Gibson was interested in the correspondence between the geometrical properties of the stimulus-objects and the geometrical properties of the perception. These were treated as variables. K6hler and Wallach were interested in the congruence or incongruence of (a) stimulus-patterns to brain-patterns and (b) brain-patterns to phenomenal patterns. These were treated as entities, not variables.