Fig 1:

Instrumental and Pavlovian conditioning. A) Schematic of instrumental training where rats learn two independent R-O associations. B) Lever pressing on both levers increased across instrumental VI training as the schedule of reinforcement thinned. C) The number of pellets earned in VI instrumental training decreased as the schedules of reinforcement grew. D) Schematic of Pavlovian conditioning where rats were conditioned with three independent CS-O associations. E) Schematic of the temporal relationship between the CS and the paired outcomes. Each CS was presented for two minutes and four pellets were delivered randomly after the first 10 seconds following CS onset. The grey box over the time line illustrates the first 10 seconds of the CS during which pellets were never delivered. F) Anticipatory food cup entries increased within the first three sessions and then stabilized for the remaining sessions. Entries were similar across CSs. G) The latency to enter the food cup following CS onset was rapid and stable across sessions. Latencies were similar between CSs. In contrast, latencies to enter the food cup following CS offset slowed dramatically across training. All data are shown as averages ±SEM, unless otherwise noted.