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Sex differences in running wheel behavior in the rat the inductive and activational effects of gonadal hormones


Animal Behaviour 31(2): 378-384
Sex differences in running wheel behavior in the rat the inductive and activational effects of gonadal hormones
The effect of estradiol benzoate (OB) administration on running-wheel activity was compared in gonadectomized male, female and neonatally androgenized female rats. In the 1st experiment, conducted on 300-400-day-old animals, OB stimulated running-wheel activity of female rats to a significantly greater extent than that of males or neonatally androgenized females. In the 2nd experiment, conducted on 91-day-old rats, females exhibited maximal activity at lower doses of Ob than males. Previous experiments have shown that open-field activity, a putative measure of susceptibility to fear, is subject to group differences in OB responsiveness (i.e. between male, female, androgenized female) which parallel those seen in the present study; gender differences in open-field activity may reflect group differences in general activity rather than male/female differences in emotionality or susceptibility to fear.


Accession: 006406559

DOI: 10.1016/s0003-3472(83)80056-6



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