Accession Number : ADA305753

Title :   Eye Movements and Visual Information Processing.

Descriptive Note : Final rept. 30 Sep 91-30 Sep 95,

Corporate Author : RUTGERS - THE STATE UNIV NEW BRUNSWICK NJ DEPT OF PSYCHOLOGY

Personal Author(s) : Kowler, Eileen

PDF Url : ADA305753

Report Date : 30 SEP 1995

Pagination or Media Count : 17

Abstract : The objective is to find out how saccadic eye movements (voluntary jumps of the eye) can be directed accurately to chosen targets within natural, patterned visual environments. An effective saccadic scanning mechanism must consist of: (1) a selective filter that determines which object serves as the saccadic target, and (2) a spatial-pooling mechanism that computes a single, precise saccadic landing position. Major findings were: (1) a single attentional filer serves both saccadic eye movements and perception; (2) attentional requirements of saccades are modest; (3) it is easier to divide attention between two widely-spaced targets than two closely-spaced targets; (4) the spatial-pooling process guides saccades to a central landing position within spatially-extended targets with a high degree of precision; (5) the central landing position is near the center of gravity; (6) the central landing position and the precision of the saccade depends on target size but not on spatial frequency content, contrast, or shape.

Descriptors :   *VISION, *VISUAL PERCEPTION, *VISUAL ACUITY, *VISUAL SIGNALS, *EYE MOVEMENTS, FREQUENCY, SPATIAL DISTRIBUTION, POSITION(LOCATION), CENTER OF GRAVITY, ENVIRONMENTS, SIZES(DIMENSIONS), TARGETS, EYE, SPACE(ROOM), PERCEPTION, INFORMATION PROCESSING, LANDING.

Subject Categories : Anatomy and Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE