Accession Number : AD0621432

Title :   THE EQUIDISTANCE TENDENCY AND ITS CONSEQUENCES. PROBLEMS IN DEPTH PERCEPTION,

Corporate Author : CIVIL AEROMEDICAL INST OKLAHOMA CITY OKLA

Personal Author(s) : Gogel,Walter C.

Report Date : APR 1965

Pagination or Media Count : 15

Abstract : The equidistance tendency is the tendency for objects or other inhomogeneities in the field-of-view to appear at the same distance as each other with the strength of this tendency being inversely related to directional separation. The evidence for the existence of the equidistance tendency and for its ability to modify the perceived depth resulting from size or stereoscopic cues is reviewed. The equidistance tendency is discussed as a disturbing factor in visual experimentation and as a necessary factor in the understanding of Emmert's law, the moon illusion, and similar phenomena. Several possible explanations for the equidistance tendency are evaluated in terms of the range of phenomena with which it is identified. (Author)

Descriptors :   (*VISION, SPACE PERCEPTION), (*SPACE PERCEPTION, VISION), VISUAL PERCEPTION, AFTERIMAGES, GEOMETRIC FORMS, PERCEPTION(PSYCHOLOGY)

Distribution Statement : APPROVED FOR PUBLIC RELEASE