CONDITIONAL DISCRIMINATION AND TEMPORAL BISECTION IN RATS
AbstractIn conditional discrimination, an animal do or do not responds during a conditioned stimulusif this stimulus was or was not preceded by a conditional stimulus of another sensorialmodality. The aim of this work was to investigate if two durations (4 or 16 s) of a samemodality stimulus can also acquire the conditional property of modulating ratâ€™s responsesduring a 5 s conditioned stimulus. A 5 s empty interval was included between the conditionaland the conditioned stimuli, so as to evaluate the durations processing by short-term memory.All the rats of the experiment learned the task. Then, the rats were tested in a temporalbisection procedure, presenting conditional stimuli in several intermediate durations between4 and 16 s. We obtained a typical temporal bisection function indicating that durationâ€™srepresentation can modulate ratâ€™s responses even if temporally separated from the responseopportunity.