Rat Brain: Effects of Environmental Enrichment on Wet and Dry Weights

Science  21 Feb 1969:
Vol. 163, Issue 3869, pp. 825-826
DOI: 10.1126/science.163.3869.825


Wet weight of rat cerebral cortex was increased by exposure to an enriched environment, as compared with standard colony or impoverished conditions. Dry weights and wet weights were compared and both yielded identical percentage differences between brains of animals experiencing enrichment and those experiencing impoverishment.