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Journal Article

Citation

Wallach H, Becklen R, Nitzberg D. J. Exp. Psychol. Hum. Percept. Perform. 1985; 11(1): 93-102.

Copyright

(Copyright © 1985, American Psychological Association)

DOI

unavailable

PMID

3156959

Abstract

Experiments are reported supporting an altered explanation of the vector analysis that occurs in certain motion displays discovered by Johansson (1950). What seemed the result of a perceptual vector analysis is ascribed to the outcome of two different, independent stimulus conditions to which such displays can give rise because of external vector analysis. The different stimulus conditions are configurational change on the one hand and one of the subject-relative stimulus conditions on the other. In two of Johansson's displays, conditions for configurational change were altered by adding stationary reference points in the surround of the displays. Veridical perception of the displays resulted in a majority of instances. We also found that the different motions that result from configurational change and from subject-relative stimulation may combine to form unitary perceived motions and that this happens quite frequently under some conditions.


Language: en

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