Prenatal stress enhanced lordotic behavior potentials in male rats but did not feminize patterns of active avoidance acquisition or open-field performance. These results suggest that prenatal stress selectively feminizes some but not all behavior patterns shown to differentiate under the influence of perinatal gonadal hormones. In the rat, the critical period for the differentiation of active avoidance behavior appears to span prenatal and early neonatal ontogeny.
Bibliographical noteFunding Information:
1This study was supported by Grant HD-04688 from the National Institute of Child Health and Human Development and by Research Scientists Development Award, Type II I-K2MH-0049 from the National Institute of Mental Health. 2Now at Department of Psychology, University of Connecticut. aNow at Department of Zoology, Michigan State University.
- Active avoidance acquisition
- Lordotic behavior
- Open-field behavior
- Prenatal stress
- Sexual differentiation