An identified neuron (CPR) evokes neuronal responses reflecting food arousal in Aplysia.

Feeding behavior of Aplysia is associated with an arousal state characterized by a constellation of maintained behaviors and by a potentiation or depression of responses to specific stimuli. A neuron (the cerebral-pedal regulator or CPR) that has widespread actions on various systems connected with feeding has been identified. CPR excites neurons that modulate or drive (i) body posture, (ii) biting, and (iii) cardiovascular behaviors. CPR also inhibits neurons concerned with defensive responses. Food stimuli, which elicit food arousal in the animal, produce prolonged excitation of the CPR. The results suggest that the CPR may evoke a central motive state representing the neuronal correlate of feeding motivation.

[1]  E. Kandel,et al.  Local, reflex, and central commands controlling gill and siphon movements in Aplysia. , 1974, Journal of neurophysiology.

[2]  K. R. Weiss,et al.  Activity of an identified serotonergic neuron in free moving Aplysia correlates with behavioral arousal , 1982, Brain Research.

[3]  R. Ambron,et al.  Identified cholinergic neurons R2 and LPl1 control mucus release in Aplysia. , 1983, Journal of neurophysiology.

[4]  Modulation of defensive reflexes in Aplysia californica by appetitive stimulation. , 1980, Behavioral and neural biology.

[5]  I. Kupfermann,et al.  Modulatory control of buccal musculature by a serotonergic neuron (metacerebral cell) in Aplysia. , 1978, Journal of neurophysiology.

[6]  J. Leonard,et al.  The Behavior of Aplysia Californica Cooper (Gastropoda; Opisthobranchia): I. Ethogram , 1986 .

[7]  E. Kravitz.  Hormonal control of behavior: amines and the biasing of behavioral output in lobsters. , 1988, Science.

[8]  E. Stellar,et al.  The physiology of motivation. , 1954, Psychological review.

[9]  U. Koch,et al.  Neuronal mediation of cardiovascular effects of food arousal in aplysia. , 1984, Journal of neurophysiology.

[10]  B. Jahan-Parwar,et al.  Command neurons for locomotion in Aplysia. , 1983, Journal of Neurophysiology.

[11]  E R Kandel,et al.  Neuronal Controls of a Behavioral Response Mediated by the Abdominal Ganglion of Aplysia , 1969, Science.

[12]  I. Kupfermann.  Feeding behavior in Aplysia: a simple system for the study of motivation. , 1974, Behavioral biology.

[13]  K. Pearson,et al.  Alteration of the Respiratory System at the Onset of Locust Flight: I. Abdominal Pumping , 1989 .

[14]  I Kupfermann,et al.  The role of a modulatory neuron in feeding and satiation in Aplysia: effects of lesioning of the serotonergic metacerebral cells , 1989, The Journal of neuroscience : the official journal of the Society for Neuroscience.

[15]  E. Kandel,et al.  Motorneuronal control of locomotion in Aplysia , 1979, Brain Research.