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Journal Article

Citation

Sergent J. J. Exp. Psychol. Hum. Percept. Perform. 1991; 17(3): 762-780.

Affiliation

Montreal Neurological Institute, McGill University, Quebec, Canada.

Copyright

(Copyright © 1991, American Psychological Association)

DOI

unavailable

PMID

1834789

Abstract

This article examines Kosslyn's (1987) hypothesis of the unequal capacity of cerebral hemispheres to process categorical and coordinate spatial relations. Experiment 1 comprised 4 different tasks and failed to support this hypothesis in normal Ss. With the same stimulus patterns as in Kosslyn's study, the results failed to confirm cerebral asymmetry for representing the 2 types of spatial relations, in normal (Experiment 2) and commissurotomized (Experiment 3) Ss. In Experiment 4, a reduction in stimulus luminance produced a partial confirmation of the hypothesis as the right hemisphere proved more adept than the left hemisphere at operating on coordinate representations, whereas both were equally competent at processing categorical spatial-relation representations. The results suggest that the 2 hemispheres can operate on both types of spatial relations, but their respective efficiency depends on the quality of the representations to be processed.


Language: en

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