Accession Number : ADA181829

Title :   The Kinetic Depth Effect and Identification of Shape.

Descriptive Note : Technical rept.,

Corporate Author : NEW YORK UNIV NY COURANT INST OF MATHEMATICAL SCIENCES

Personal Author(s) : Landy, Michael S ; Sperling, George ; Dosher, Barbara ; Perkins, Mark E

PDF Url : ADA181829

Report Date : Jan 1987

Pagination or Media Count : 21

Abstract : This paper introduces a new method for assessing the effectiveness of kinetic depth stimuli for creating a percept of three-dimensional shape. The task is shape and motion identification, where each shape presented is one of a large lexicon of shapes. The shape consist of bumps and depressions on an otherwise flat ground. They vary in the number of bumps, their position and size. Using multi-dot representations of the shapes, identification is demonstrated to increase with dot numerosity and with the extent of depth portrayed. This task holds promise as a paradigm for examining objectively the cues necessary for the kinetic depth effect. Accurate performance on the task requires a global percept of three-dimensional shape, and is not prone to subject strategies using simple velocity measurement at a small number of spatial locations.

Descriptors :   *IDENTIFICATION, *SHAPE, *TOPOLOGY, DEPTH, KINETICS, VOCABULARY, STRATEGY, POSITION(LOCATION), SPATIAL DISTRIBUTION, STIMULI, MOTION, MEASUREMENT, THREE DIMENSIONAL, VELOCITY

Subject Categories : Theoretical Mathematics

Distribution Statement : APPROVED FOR PUBLIC RELEASE