Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Ronald J. Barfield"'
Publikováno v:
Behaviour. 139:801-824
Abstract The village weaver (Ploceus cucullatus), a tropical passerine bird widely distributed in subSaharan Africa, was the subject of experiments in aviaries at our university. Castrated males fall in the dominance hierarchy, fewer such males estab
Publikováno v:
Physiology & Behavior. 63:467-473
White, N. R., M. Prasad, R. J. Barfield and J. G. Nyby. 40- and 70-kHz vocalizations of mice (Mus musculus) during copulation. Physiol Behav 63(4) 467–473, 1998. Ultrasonic vocalizations were tape recorded from five pairs of copulating mice and sub
Facilitation of Sexual Receptivity by Ventromedial Hypothalamic Implants of the Antiprogestin RU 486
Publikováno v:
Hormones and Behavior. 27:488-498
RU 486 is known primarily as an antagonist to progestins and glucocorticoids. However, RU 486 has also been shown to have agonistic progestational properties in biochemical and behavioral studies. In the current study, RU 486 was implanted directly i
Publikováno v:
Hormones and Behavior. 26:545-555
Two experiments examined the role of the steroid hormones, estradiol (E2), progesterone (P), and testosterone (T), in activating scent marking and 50-kHz ultrasonic vocalizations in ovariectomized Long-Evans rats in response to a devocalized male rat
Publikováno v:
Behavioral and Neural Biology. 58:131-137
Pups emit a broadband vocalization ranging from 2 to 40 kHz that generally occurs when the mother sits or steps on her pups. In an earlier study (Ihnat, White, and Barfield, under review), we noted that the mother was more likely to move on the pups
Variations in scent marking and ultrasonic vocalizations by Long-Evans rats across the estrous cycle
Publikováno v:
Physiology & Behavior. 51:783-786
The purpose of the present study was to investigate whether the signaling behaviors of female Long-Evans rats varies over the estrous cycle. Scent marking and 50-kHz ultrasonic mating vocalizations, in response to a devocalized sexually experienced m
Autor:
Ronald J. Barfield, John A. Matochik
Publikováno v:
Hormones and Behavior. 25:445-460
The effects of testosterone (T) and its major metabolites, estradiol (E2) and dihydrotestosterone (DHT), on the restoration of sebaceous scent marking and 50-kHz ultrasonic vocalizations in male rats were measured in two studies (Experiments 1 and 2)
Publikováno v:
Hormones and Behavior. 24:301-310
The progestin receptor antagonist RU 38486 (henceforth referred to as RU 486) was tested for facilitative effects on female receptive behavior in ovariectomized Long-Evans rats primed with 2 micrograms estradiol benzoate (EB). RU 486 (0, 0.5, 1.6, or
Publikováno v:
Brain Research. 524:160-163
Extracellular dopamine (DA) and 3,4-dihydroxyphenylacetic acid (DOPAC) in the nucleus accumbens (N. Acc.) were measured by in vivo microdialysis during male sexual activity. DA and DOPAC were significantly increased during copulation, but not during
Autor:
Ronald J. Barfield, Nicholas R. White
Publikováno v:
Journal of Comparative Psychology. 104:140-146
Both male and female rats (Rattus norvegicus) emit ultrasounds during copulation. Bursts of ultrasounds from males that occur as ejaculation approaches are lower in frequency, longer in duration, and louder than those that appear earlier in the ejacu