The effect of subcortical lesions on retention of a brightness discrimination in rats.

Abstract
After albino rats were trained on a shock-avoidance brightness discrimination, they were subjected to subcortical lesions and tested for retention. Although "virtually every part of the brain stem was investigated . . . a retention deficit was found only in those Ss having bilateral damage to either the thalamic nuclei medial to the geniculate bodies, pretectal region, mammillary bodies, caudal portion of the fasciculus retroflexus, or the interpeduncular nucleus." From Psyc Abstracts 36:02:2DC88T. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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