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Neonatal novelty exposure modulates hippocampal volumetric asymmetry in the rat.

journal contribution
posted on 08.10.2001 by Timothy Verstynen, Robert Tierney, Tina Urbanski, Akaysha C. Tang

Early life environmental manipulations have been shown to affect hippocampal-dependent learning, hippocampal volume and cerebral lateralization. In this study, we investigated the effects of neonatal stimulation on hippocampal volumetric asymmetry. Long-Evans hooded rats were exposed to a novel non-home environment 3 min daily for the first 3 weeks of life. Histological measures of the left and right hippocampus were made at 8 months of age. We found that neonatal novelty exposure resulted in a long-lasting change in hippocampal volumetric asymmetry. Specifically, this brief and transient early life stimulation increased the right hippocampal volumetric dominance at mid-adulthood.

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08/10/2001

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