Effects of environmental enrichment on old mice (1982)

Warren, J. M., Zerweck, C., Anthony, A.

Abstract

Groups of 3 or 4 male mice were transferred to 45x17x15 cm large caged containing structures to crawl through, marbles, ping pong balls plus 4 sexually receptive females. Subjects were tested when they were 750 days old. The enriched mice were significantly superior on an incidental learning and a food-seeking task. .. The enriched group had more cerebrocortical cells with very high RNA content.