Abstract
This study investigated whether nonfood stimuli can facilitate feeding behavior in Aplysia. A tail-pinch stimulus resulted in a reduction of the latency of several indices of feeding behavior evoked by seaweed presented 4 min after the tail pinch. Handling similarly reduced subsequent feeding latencies. The effect of handling was found to be time dependent. Compared to nonhandled animals, animals tested immediately after handling showed increased latencies to respond to food, whereas animals tested 4 min after handling showed significantly reduced feeding latencies. The findings are consistent with a model in which a variety of stimuli can converge on a food-arousal system, which then exerts divergent actions on several motor systems.
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