A possible physiological basis for the dud-stud phenomenon

Ann S. Clark, Lori A. Davis, Edward J. Roy

Research output: Contribution to journalArticlepeer-review


Intact male rats were tested on two successive weekly tests with females to determine their level of sexual activity. Nuclear estrogen receptor content was measured in specific brain regions of individual sexually responsive and sexually nonresponsive males. Sexually nonresponsive male rats had significantly reduced nuclear estrogen receptor levels in the preoptic area compared to sexually responsive males. Sexually active males did not differ from inactive males in nuclear estrogen receptors in the medialbasal hypothalamus.

Original languageEnglish (US)
Pages (from-to)227-230
Number of pages4
JournalHormones and Behavior
Issue number2
StatePublished - Jun 1985

ASJC Scopus subject areas

  • Endocrinology
  • Endocrine and Autonomic Systems
  • Behavioral Neuroscience


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