One rat was the subject in a Pavlovian conditioning study. The conditioned stimulus was white noise and the unconditioned stimulus was electric stimulation of the lateral hypothalamus (ESLH). Latency to start eating from ESLH onset was the dependent measure. The mean latency on signaled trials was significantly longer than the mean latency on unsignaled trials. This indicates that the conditioned response (inhibition of eating) was compensatory to the unconditioned response (eating).
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