Accession Number : ADA113882

Title :   Detection and Identification Contrast Sensitivity in Response to Complex Stationary and Moving Targets.

Descriptive Note : Final technical rept. 1 Feb-31 Oct 81,

Corporate Author : SOUTHEAST MISSOURI STATE UNIV CAPE GIRARDEAU

Personal Author(s) : Petersik,J Timothy

PDF Url : ADA113882

Report Date : Oct 1981

Pagination or Media Count : 143

Abstract : Five well-practiced observers set detection and identification contrast thresholds for Snellen-letter stimuli of different sizes (i.e., fundamental spatial frequencies) under the following conditions: moving (three velocities) vs. stationary, six rotations in the picture plane, and flickering (five temporal frequencies). The subjects contrast sensitivities for Snellen-letter stimuli were also compared to their contrast sensitivity functions (CSFs) for both static and moving sinusoidal gratings. In a final experiment, subjects adapted to stationary spatial-frequency gratings and set contrast thresholds for letter stimuli.

Descriptors :   *Target detection, Identification, Contrast, Sensitivity, Moving targets, Stimuli, Velocity, Response

Subject Categories : Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE