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The Hormones Of Pregnancy Alter Somal Size In The Medial Preoptic Area Of The Rat Brain, Lori A. Keyser
The Hormones Of Pregnancy Alter Somal Size In The Medial Preoptic Area Of The Rat Brain, Lori A. Keyser
Master's Theses
Formerly non-responsive females will display maternal behavior (MB) following pregnancy and parturition. The behavioral alterations are believed to occur in response to hormonal changes that accompany pregnancy. The medical pre optic area (MPOA) regulates hormone-induced MB. The current study examined neuronal changes which might account for the modified behavior. Twenty adult female Sprague-Dawley rats were assigned a hormone condition: ovariectomized (OVX), ovariectomized/hormone-treated (P+E2), intact diestrus (DI), or pregnant (PREG). Animals were killed, and their brains fixed in Golgi-Cox solution. Somata of the MPOA and related cortex were measured in each group using a Bioquant imaging system. Pregnant females …
The Effects Of Caffeine On Operant Behavior In The Mongolian Gerbil, Stephanie L. Myers
The Effects Of Caffeine On Operant Behavior In The Mongolian Gerbil, Stephanie L. Myers
Honors Theses
The present study looks at the effects of stomach loads of caffeine on operant behavior in Mongolian gerbils (Meriones unguiculatus). Four male and four female gerbils were trained to a fixed interval schedule of 30 seconds with Noyes 4.5 mg rodent pellets used for reinforcement. A data collection and analysis package for Apple computers was used to measure the post-reinforcement response frequencies and number of reinforcements. Data was collected using a baseline of saline stomach loads of 1% of body weight, and then stomach loads of ascending concentrations caffeine mixed with saline (10, 20, 40, 60 mg/kg) with two to …
The Effect Of Progesterone On Food And Water Intake And Weight In The Adult Male Rats After Stomach Loads Of Hypertonic Saline, Michael D. Smith
The Effect Of Progesterone On Food And Water Intake And Weight In The Adult Male Rats After Stomach Loads Of Hypertonic Saline, Michael D. Smith
Master's Theses
Eight adult male albino rats were randomly assigned to each treatment condition of progesterone injections (0,10,40, and ·100 mg/kg/day dissolved in Bee of sesame seed oil), and all 2s received a hypertonic NaCl stomach loading. A control group for procedural effects was given injections of sesame seed oil alone and isotonic NaCl stomach loads. The dependent variables were body weight, food intake and water intake. Single factor analyses of covariance revealed a significant difference between the 0 mg progesterone group and the control group for food and water intake but not weight. No significant differences were found in food and …
The Effects Of The Female Sex Hormones On Food And Water Intake And On Body Weight After Hypertonic Stress In The Female Rat, John Kibler
Master's Theses
No abstract provided.