Motion versus pattern cues in visually time-compressed target detection in static noise

Abstract

Investigated the relative effects of pattern cues and target-motion cues on time to detect linear targets embedded in static noise. A within-S factorial design was employed with 8 paid 18-22 yr olds who were instructed to detect targets in a simulated time-compressed radar display presented via a computer-controlled plasma panel equipped with a touch-sensitive response device. Two pattern-cue variables (number of target spots and target interspot distance) and 2 target-motion variables (rate of target advancement and target spot duration) were used, each at 3 levels. It was observed that each of the 4 target variables had a reliable effect on detection latency, but the number of target spots (a pattern cue) accounted for the largest proportion of variance. The more important of the 2 motion cues, target spot duration, primarily facilitated target detection when the number of target spots was reduced to 3, the lowest of the 3 target-spot levels investigated. It is concluded that pattern cues are the most critical feature in the present type of detection task. Implications of the findings for the design of operational time-compressed radar systems are considered. (16 ref) (PsycInfo Database Record (c) 2025 APA, all rights reserved)