Abstract
An experiment was performed testing different pattern and motion cues for enhancement of detection rates in visual search for linear target patterns imbedded in heavy static noise. Eight subjects participated in a factorial, within-subject design which included the number of spots in the target pattern, the rate of advancement of the target pattern on the display, the successive spot duration in the target pattern, and the interspot distance for successive spots in the target pattern. Time required to detect and designate targets was used as the dependent variable. Displays were presented via a computer-controlled plasma panel equipped with a touch-sensing device for target pattern designation. Analyses of the data revealed that both the rate of advancement of the target pattern and the spot duration were important factors for facilitating rapid detection of targets when spatial definition was poor, but such cues were less critical when spatial definition of the targets was enhanced. Results were discussed in terms of the relationship among pattern and motion cues in the target detection task.
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