Abstract
The purpose of this study was to investigate the effects of noise, distortion and fill and noise, distortion and fill interactions on pattern discrimination. Patterns were generated from a 10 × 10 matrix on a random number basis and were comprised of black filled squares. Noise was incorporated in the patterns by filling in additional selected (on a random basis) squares. Distortion was the random displacement of filled squares comprising the basic pattern. Forty-five male undergraduates served as Ss. Patterns were projected automatically with a stimulus exposure time of 1.0 sec. and a constant inter-trial time of 6 sec. duration. The method of constant stimuli was employed. The results showed that the discrimination of patterns, as generated in this study, was significantly affected only by 40% distortion of the basic pattern.
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