Hemispheric processing differences revealed by differential conditioning and reaction time performance.

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Abstract
Used 2 experimental procedures to examine (a) information-processing differences between 2 groups of Ss identified by the form (Cs, C-form responders; Vs, V-form responders) of their conditioned eyeblinks; (b) information-processing differences between the right and left cerebral hemispheres; and (c) parallels between hypothesized C-V differences and right-left hemisphere differences. In Exp I with 64 Ss, the words "blink" and "don't blink" were positive and negative conditioned stimuli. Results show that the conditioning performance of Cs was more influenced by the right visual field than when they were presented directly to the left visual field. Exp II was designed to determine whether such hemisphere-of-presentation differences for Cs vs Vs could also be obtained in a very different task. For both Cs and Vs Ss, reaction times to complex polygon pairs averaged 20 msec faster on left visual field trials than on right visual field trials, consistent with current hypotheses about right-hemisphere specialization for visuospatial processing. (33 ref) (PsycINFO Database Record (c) 2012 APA, all rights reserved)

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