Stimulus additivity and dominance in discrimination performance by cats.

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Abstract
Tests of stimulus additivity and dominance were administered before and after 5 cats were subjected to destruction of the prestriate association cortex; there were 4 normal controls. Differences in form, size, and brightness which could separately be discriminated 70% and 80% of the times presented were combined in all possible ways. No significant change resulted from prestriate lesions. Stimulus dominance was tested by opposing cues. Preoperatively, the cats preferred brightness over form and size. The controls also preferred brightness postoperatively, but the operated animals displayed no such preference. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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