Sexually dimorphic brain and behavioral asymmetries in the neonatal rat. | Zendy

Donald A. Ross | Zendy; S.D. Glick | Zendy; Richard C. Meibach | Zendy

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Sexually dimorphic brain and behavioral asymmetries in the neonatal rat.

Author(s) -

Donald A. Ross,

S.D. Glick,

Richard C. Meibach

Publication year - 1981

Publication title -

proceedings of the national academy of sciences

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.011

H-Index - 771

eISSN - 1091-6490

pISSN - 0027-8424

DOI - 10.1073/pnas.78.3.1958

Subject(s) - diencephalon , sexual dimorphism , pons , medulla , hippocampus , medicine , endocrinology , biology , cortex (anatomy) , cerebral cortex , lateralization of brain function , neuroscience , thalamus , central nervous system , anatomy

The 2-deoxy-D-glucose method was used to study asymmetries in cerebral metabolic activity in neonatal rats. Left-right asymmetries in 2-deoxy-D-glucose uptake were observed in hippocampus, diencephalon, cortex, and medulla-pons: 2-deoxy-D-glucose incorporation was greater in right hippocampus, right diencephalon, left cortex, and left medulla-pons. These asymmetries occurred only in females. We also observed neonatal asymmetries in tail position that, in both sexes, were predictive of adult turning preferences; females had right-sided biases in both neonatal and adult characteristics. Collectively these data indicate that cerebral lateralization is sexually dimorphic and is present at birth.

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