Interhemispheric cooperation: Left is left and right is right, but sometimes the twain shall meet

Author(s): Levy, J.

Journal/Book: J Exp Psychol-Hum Percep Perf. 1995; 21: 750 First St NE, Washington, DC 20002-4242. Amer Psychological Assoc. 1243-1258.

Abstract: Interhemispheric cooperation in the processing of nonsense syllables projected simultaneously to both hemispheres was investigated in 2 experiments. Stimuli were projected unilaterally in the left and right visual fields (LVF, RVF) and bilaterally (the same syllable in both fields, BVF; Experiment 1, 64 right-handed subjects) or centrally (CVF; Experiment 2, 32 right-handed subjects). Accuracy and error patterns differed for the LVF and RVF. Error patterns were intermediate for the BVF-CVF and were partly shifted toward the RVF for subjects with large RVF advantages and toward the LVF for those with small asymmetries. Regression analyses showed that variance in BVF-CVF error patterns was jointly predicted by LVF and RVF variances. Both hemispheres, as demonstrated by means and regression analyses, contribute to the processing of bihemispherically presented syllables.

Note: Article KE Luh, Univ Wisconsin, Dept Psychol, 1202 W Johnson St, Madison, WI 53706 USA

Keyword(s): SIMULTANEOUS BILATERAL INPUT; REACTION-TIME; PERCEPTUAL ASYMMETRIES; HEMISPHERES; INFORMATION; STIMULI; FIELD; INTERFERENCE; INTEGRATION; FACES

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