Beatriz J. Vasquez

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The study examined the effect of pre- and post-training bilateral amygdaloid lesions on retention of a one-trial inhibitory avoidance response. Groups of rats, including unimplanted controls and implanted controls, were trained and tested for retention at 4, 7 or 12 days following training. The lesions were made at one of several intervals before or after(More)
These experiments were performed to examine the effects of graded doses of diazepam, flurazepam, or lorazepam given to Swiss-Webster mice either 30 min prior to training or immediately after training in a one-trial inhibitory (passive) avoidance task. A 350 μA footshock was administered following entry into a darkened compartment and retention was tested(More)
Changes in learning and memory processes that occur with senescence were investigated in male and female Fischer 344 rats, 3-26 mth of age. Age-related impairments were seen in retention of inhibitory avoidance learning, acquisition of a Y-maze discrimination task, and in a swim escape task with short intertrial training intervals. In contrast, old animals(More)
Graded doses of sodium nitrite were administered shortly before or immediately after a single training trial in an inhibitory avoidance task. A retention test was given at 24 h (rats) or 72 h (mice) after training. The results indicate that sodium nitrite impairs acquisition of an inhibitory avoidance response in rats and mice. Retention was impaired with(More)