Dichoptic and dichotic micropattern discrimination |
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Authors: | E William Yund Rober Efron |
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Institution: | 1. Neurophysiology-Biophysics Research Laboratory, Veterans Administration Hospital, 150 Muir Road, 94553, Martinez, California
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Abstract: | Ss compared two rapidly successive, brief, discriminably different stimulus elements, called a micropattern, with a second micropattern composed of the same two stimulus elements presented in reverse temporal order. Discriminations could be made between two such micropatterns in the monaural (monocular) as well as in the dichotic (dichoptic) modes of presentation. Discrimination between micropatterns was based on the perceptual dominance of the temporally trailing stimulus element in both modalities and in both modes of presentation. While monaural (monocular) micropattern discrimination is significantly superior to dichotic (dichoptic) discrimination, the existence of dichotic (dichoptic) discrimination demonstrates that no essential peripheral process is required for micropattern discrimination. |
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