Showing papers in "Hormones and Behavior in 1971"

TL;DR: The results suggest that hormonally induced heat can be differentiated from natural heat on the basis of duration of lordosis, and the well-known synergistic relationship between estrogen and progesterone in bringing about lordosis in ovariectomized females is suggested.

TL;DR: It was concluded that the peripherally active steroid dihydrotestosterone probably plays no role in the maintenance of sexual behavior and can be accumulated by brain and peripheral androgen-sensitive tissues.

TL;DR: Evidence is reviewed for the concept that prolactin is one of the essential hormones for maternal behavior in the rabbit, rat and mouse and retrieval, crouching and licking of pups is obtained following treatment with estradiol, progesterone and Prolactin.

TL;DR: The data for the mouse indicate that sexual behavioral differentiation induced by androgen stimulation in infancy is best characterized as an inhibition of the potential to display feminine sexual behavior in adulthood.

TL;DR: Support for the concept of a nonhormonal basis of maternal behavior was found in the inability of blood, cross-transfused from pup-induced maternal virgins and spontaneous retrieving females, to shorten latencies for retrieving in recipient virgins.

TL;DR: Apparently, the neural tissues mediating aggressive behavior and masculine sexual behavior in the male are not exclusively specific to androgens.

TL;DR: The present results are consistent with, but not proof of, the concept that RNA synthesis may be essential for steroidinduced sexual behavior.

TL;DR: The duration of sexual receptivity of estrous female golden hamsters is directly related to both the amount of stimulation received from the male and the time from the onset of stimulation as mentioned in this paper, as measured by lordosis duration.

TL;DR: It was concluded that males and neonatally androgenized females are less responsive to estrogen in adulthood than are females and Neonatally castrated males.

TL;DR: The results suggest that progesterone directly antagonizes actions of potent androgens within the central nervous system but does not, with the techniques employed, inhibit peripheral actions of these steroids.

TL;DR: The scent marking response associated with the ventral gland of the Mongolian gerbil declined in frequency following castration, and was restored by testosterone propionate (TP) in proportion to the amount of hormone administered.

TL;DR: The incidence of failure of ovulation as adults was related to the dose, and with increasing dosage over the range 1–100 μg no significant evidence of a progressive decrease in immunoassayable luteinizing hormone concentration in the plasma or anterior pituitary was obtained.

TL;DR: The results suggest that the structural requirements of the androgen molecule for stimulating sexual behavior differ from those determining uterine growth responses.

TL;DR: Extensive lesioning of the olfactory bulbs eliminated mounting in all subjects, suggesting that the mounting of early androgenized females is dependent upon the same sensory channels as the mountingof the males.

TL;DR: A decrease in prolactin concentration occurred in response to exteroceptive stimulation from the pups not only in those mothers that had only a functional olfactory sense remaining, but also in those in which only the optic sense was intact, which suggests that in the absence of a specific mediator, i.e., olfaction, the opticsense is able to mediate the stimulus for Prolactin release.

TL;DR: It appears that mating experience even in the absence of hormonal therapy and lordotic behavior facilitates later hormonal induction of receptivity in ovariectomized Swiss-Webster females.

TL;DR: The failure of the bulbectomized mouse to build a nest following cold exposure may indicate that the olfactory bulbs are involved indirectly in one aspect of thermoregulation as well as the aspect of maternal behavior.

TL;DR: It seems that the (hypothalamic) androgen receptors for sexual behavior differ in their response to cyproterone from other androgens receptors, including the ( Hypothalamic] receptors for feedback regulation of gonadotropin.

TL;DR: The results indicate that several natural estrogens can stimulate lordosis behavior in the Ovariectomized rat, and that there is no clear relationship between estrous-promoting potency and genital tract effects in all estrogens.

TL;DR: The LM line appeared to be more sensitive to TC level than either the HM or the AC line suggesting a differential response of intact males depending on the genetic background of the population.

TL;DR: Results show that the effect of supplementary estradiol is dependent upon the time interval permitted for priming, and indicate that the estrogenic mechanisms regulating latency and duration of heat are experimentally separable.

TL;DR: The findings lead to the conclusion that the brain area controlling this behavior is responsive to both testosterone and estrogen, and when the two are administered together there is active competition for receptor sites in the brain.

TL;DR: The authors found that animals receiving the hormone during both avoidance training and test did not show significant increases in suppression, while ACTH administered during both test and approach training sessions was less effective in prolonging suppression of the approach response, than when given on test sessions alone.

TL;DR: The present study suggests that the pituitary gland is also necessary for nest building in addition to the ovarian steroids, which is essential for maternal-nest building behavior in the rabbit.

TL;DR: Attention is drawn to the fact that among the different maternal activities merely those depending upon olfactory stimulation are affected by gestation in the mouse.

TL;DR: It was found that cyproterone treatment significantly reduced the proportion of animals displaying the ejaculatory pattern, and, as well, reduced the frequency of intromission in nonejaculating animals.

TL;DR: It is clear that estradiol affects not only spontaneous behavior but also the behavioral disturbances induced by various neurotropic drugs, such as cocaine, coniine, LSD, ethylmorphine, and strychnine.

TL;DR: Pituitary prolactin and growth hormone levels were determined by disc electrophoresis on 10% polyacrylamide gel during the virginal and pregnant stages and on Day 12 of lactation, using C3H/He and C57BL/6 mice to demonstrate superiority of the former in both mammary development and lactational performance.

TL;DR: It is suggested that pheromones may stimulate the gonadotropic function of the pituitary in the rat and olfactory stimuli do not directly activate the neural structures necessary for early mating behavior in the 5-day cyclic females of the strain used in the present experiments.

TL;DR: There was no effect of this manipulation on the degree of suppression of an ongoing licking response for water by a fear-provoking conditioned stimulus and females showed greater suppression of drinking following the CS presentation.