Abstract
Five rats with bipolar electrodes implanted unilaterally in the dorsal hippocampus were run in a T-maze with an exploratory incentive. Trials were given following the elicitation of afterdischarges by electrical stimulation and on alternate sets of days with no stimulation. There were no group differences in choice of the exploratory incentive between the stimulation and nonstimulation conditions, but two Ss chose the exploratory incentive more on trials following stimulation than on trials without stimulation while three Ss chose the exploratory incentive consistently less on trials following stimulation. All Ss perseverated more following stimulation. These results show marked similarities to results obtained in animals with hippocampal lesions.
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