Accession Number : ADA183445

Title :   Visual Input Requirements Relating to Pursuit Tracking Accuracy.

Descriptive Note : Rept. for Feb 85-Jun 86,

Corporate Author : LETTERMAN ARMY INST OF RESEARCH PRESIDIO OF SAN FRANCISCO CA

Personal Author(s) : Bloom,Kenneth R ; Zwick,Harry

PDF Url : ADA183445

Report Date : Jun 1987

Pagination or Media Count : 23

Abstract : The interaction between visual function and pursuit tracking performance was measured in 10 human volunteers who participated in three daily 1-hr sessions involving two target sizes (18 min arc & 6 min arc - 1 min arc = 0.28 mrad), two target intensities (photopic = 25 cd/sq m, mesopic = .76cd/sq.m, and two directions of horizontal target motion. Pursuit tracking performance was measured by a computerized video digitizing system, developed at LAIR, during 20-sec tracking trials. Analysis of variance showed significant main effects for target luminance and under mesopic target conditions, target size on pursuit tracking accuracy, pointing to the need to delineate the visual requirements of visual motor tasks to assess the effects of battlefield laser exposure.

Descriptors :   *TRACKING, *MOVING TARGETS, *VISUAL TARGETS, ACCURACY, BATTLEFIELDS, COMPUTER APPLICATIONS, EXPOSURE(GENERAL), HORIZONTAL ORIENTATION, IMAGE INTENSIFICATION, INPUT, LASER HAZARDS, LUMINANCE, MOTORS, MOVING TARGETS, PURSUIT COURSES, REQUIREMENTS, SIZES(DIMENSIONS), TARGETS, TRACKING, VIDEO SIGNALS, VISION, PSYCHOMOTOR FUNCTION

Subject Categories : Administration and Management

Distribution Statement : APPROVED FOR PUBLIC RELEASE