Brain Weight Increases Resulting from Environmental Enrichment: A Directional Dominance in Mice

Science  21 Aug 1970:
Vol. 169, Issue 3947, pp. 776-778
DOI: 10.1126/science.169.3947.776


A genetic analysis of brain weights of 544 mice reared in either enriched or standard laboratory environments indicated significant directional dominance in the percentage of increase in brain weight as a result of enrichment.