Effects of differential rearing on cortical evoked potentials of the albino rat

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3 groups of Sprague-Dawley albino rats were reared in different environments from weaning to the age of 95 days. One group was in a visually enriched environment (n = 8), a 2nd group was in an auditorily enriched environment (n = 8) and a 3rd group, controls, received no enrichment (n = 16). Photic and auditory evoked potentials were recorded in unanesthetized Ss from chronically implanted epidural electrodes over the visual and auditory cortex. Ss whose enrichment included visual stimulation yielded significantly shorter latencies in their photic evoked responses recorded over the visual cortex than latencies recorded from controls or from Ss whose enrichment excluded visual stimulation. (17 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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