Effects of estrus, estrogen-progesterone priming, and vaginal stimulation on tonic immobility, dorsal immobility, and lordosis in the female rat

Three complex inhibitory responses, tonic immobility, the dorsal immobility response, and lordosis, were studied in the intact female rat during estrus and diestrus and in ovariectomized rats with estrogen-progesterone treatment or controls. In each condition, the effects of vaginal-cervical stimula...

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Bibliographic Details
Published inPhysiology & behavior Vol. 35; no. 4; p. 577
Main Authors Smith, R L, Webster, D G, Van Hartesveldt, C, Meyer, M E
Format Journal Article
LanguageEnglish
Published United States 01.01.1985
Subjects
Animals
Brain - physiology
Cervix Uteri - physiology
Dopamine - physiology
Estradiol - pharmacology
Female
Gonadal Steroid Hormones - physiology
Movement
Posture
Progesterone - pharmacology
Rats
Sexual Behavior, Animal - physiology
Vagina - physiology
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Summary:Three complex inhibitory responses, tonic immobility, the dorsal immobility response, and lordosis, were studied in the intact female rat during estrus and diestrus and in ovariectomized rats with estrogen-progesterone treatment or controls. In each condition, the effects of vaginal-cervical stimulation were also studied. The results of two experiments indicate that estrus and estrogen-progesterone treatment significantly potentiate lordosis and the dorsal immobility response with or without vaginal-cervical stimulation. Tonic immobility was also potentiated by estrus and estrogen-progesterone treatment, but only if vaginal-cervical stimulation was applied. Vaginal-cervical stimulation potentiated both tonic immobility and the dorsal immobility response, but not lordosis, which was already at a high level.
ISSN:0031-9384
DOI:10.1016/0031-9384(85)90143-X