Prior research has established that escape impairment resulting from prior inescapable shock (IS) could be reversed by the peripheral administration of the opiate antagonist naltrexone (NTX), but not the quaternary form of naltrexone (QNTX), which…
This study was designed to compare the estimated energy balance, linear growth (body and bone lengths) and body composition (all components including body mass, total body water, fat, protein and ash) response to daily spontaneous running (DSR) in…
Food restriction and/or starvation has a consistently greater and more permanent effect on physical growth in males than in females. Because diabetes may be viewed as being analogous to starvation, we tested the hypothesis that diabetes would reduce…
The role of the olfactory sense in the expression of cocaine-induced conditioned place preference (CPP) was examined in adult male rats (n = 35) of the N/Nih strain. Consistent with the scientific literature, rats were observed to significantly (p…
In this report the role of olfactory bulb (OB) norepinephrine (NE) in the identification and recognition of urinary chemical cues was examined. In Experiment 1, sexually naive adult male Sprague-Dawley rats were treated with either the noradrenergic…
Rewards, as diverse as food, sweetened solutions, copulation, electrical brain stimulation, and drugs abused by humans, have been shown to condition place preferences in rats. Juvenile rats will readily learn to traverse a T-maze for the opportunity…
An experiment was performed to determine if hyperprolactinemia (chronically elevated serum prolactin levels), which inhibits testosterone-activated male sexual activity, also affects other androgen-dependent behaviors. Thus defecation and urine…
