Response selection properties of food and brain-stimulation reinforcers in rats.


Rats were exposed to a differential conditioning procedure in which one lever-stimulus predicted a food UCS (for one group) or a brain-stimulation UCS (for 2 other groups) while a second lever-stimulus was explicitly unpaired with the UCS. A fourth group received differential training where one lever-stimulus signalled food and the other brain-stimulation… (More)


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