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Effects Of Cholinergic And Dopaminergic Drugs On Number And Time Processing In Rats, Romina Coppa

Theses and Dissertations (Comprehensive)

This study describes the effects of cholinergic and dopaminergic drugs on time and number processing by rats. Rats were trained to discriminate discrete sound sequences. On number trials, the duration of the sound sequence was a constant 4 seconds and the number of sounds was 2 or 8. On time trials, the number of sounds was held constant at 4, and the duration of the sound sequence was either 2 or 8 seconds. Psychophysical functions for number and time were obtained by presenting unreinforced sequences of intermediate number and duration. Accuracy of performance was greater with temporal signals than with …