Differences in temporal aspects of food acquisition between rats and two strains of mice in a closed operant economy.

Differences in temporal aspects of food acquisition between rats and two 5 strains of mice in a closed operant economy 6 7

P-89: Role of Nutrition Diet with and without Mineral-Vitamin Elements on Superovulation of Mice

Background: The quality and quantity of the diet has undeniable effects on the reproduction of organisms. We examined the effects of two diets (with and without mineral supplementation-Vitamins) on super-ovulation in two strains of mice (B6D2F1 and NMRI) in Royan Institute, Tehran. Materials and Methods: For this purpose, 40 female mice (21 days) from each strain were divided into four experime...

Title: THE EFFECTS OF DELAYED REINFORCEMENT AND A RESPONSE-PRODUCED AUDITORY STIMULUS ON THE ACQUISITION OF OPERANT BEHAVIOR IN RATS

The present experiment examined the effects of different delays of food delivery with and without a response-produced auditory stimulus on the acquisition of a spatially defined operant in rats. The operant was breaking a photoelectric beam located near the ceiling at the rear of the experimental chamber. In five groups of experimentally naive rats, the effects on photobeam-break responses of t...

Does whole body exposure to GSM-950 MHz electromagnetic fields affect acquisition and consolidation of spatial information in rats?

Background: This study was planned to examine the effects of whole-body exposure to GSM-950 MHz electromagnetic fields (EMFs) on acquisition and consolidation of spatial memory in rats using a water maze task. Materials and Methods: In experiment 1, the animals were given two blocks of five trials per day for three consecutive days in a water maze task. The interval between blocks was 4h...

Bromocriptine increased operant responding for high fat food but decreased chow intake in both obesity-prone and resistant rats.

Dopamine (DA) and DA D₂ receptors (D2R) have been implicated in obesity and are thought to be involved in the rewarding properties of food. Osborne-Mendel (OM) rats are susceptible to diet induced obesity (DIO) while S5B/P (S5B) rats are resistant when given a high-fat diet. Here we hypothesized that the two strains would differ in high-fat food self-administration (FSA) and that the D2R agonis...