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Science 21 February 1969:
Vol. 163. no. 3869, pp. 825 - 826
DOI: 10.1126/science.163.3869.825
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Articles

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

Edwerd L. Bennett 1, Mark R. Rosenzweig 2, and Marian C. Diamond 3

1 Laboratory of Chemical Biodynamics, Lawrence Radiation laboratory, University of California Berkeley 94720
2 Department of Psychology
3 Department of Physiology-Anatomy

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.


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Science. ISSN 0036-8075 (print), 1095-9203 (online)