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Science 5 January 1990:
Vol. 247. no. 4938, pp. 85 - 87
DOI: 10.1126/science.2294596
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Articles

Science, Vol 247, Issue 4938, 85-87
Copyright © 1990 by American Association for the Advancement of Science

articles

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

T Teyke, KR Weiss, and I Kupfermann

Center for Neurobiology and Behavior, College of Physicians and Surgeons, Columbia University, New York, NY 10032.

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.


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Concerted GABAergic Actions of Aplysia Feeding Interneurons in Motor Program Specification.
J. Jing, F. S. Vilim, J.-S. Wu, J.-H. Park, and K. R. Weiss (2003)
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Fast Synaptic Connections From CBIs to Pattern-Generating Neurons in Aplysia: Initiation and Modification of Motor Programs.
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J Neurophysiol 89, 2120-2136
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Cerebral CBM1 Neuron Contributes to Synaptic Modulation Appearing During Rejection of Seaweed in Aplysia kurodai.
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Cerebral-Abdominal Interganglionic Coordinating Neurons in Aplysia.
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J Neurophysiol 85, 174-186
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Intrinsic and Extrinsic Modulation of a Single Central Pattern Generating Circuit.
P. T. Morgan, R. Perrins, P. E. Lloyd, and K. R. Weiss (2000)
J Neurophysiol 84, 1186-1193
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Multifunctional Neuron CC6 in Aplysia Exerts Actions Opposite to Those of Multifunctional Neuron CC5.
Y. Xin, K. R. Weiss, and I. Kupfermann (2000)
J Neurophysiol 83, 2473-2481
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Classical Conditioning of Feeding in Aplysia: II. Neurophysiological Correlates.
H. A. Lechner, D. A. Baxter, and J. H. Byrne (2000)
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Synaptic Modulation Contributes to Firing Pattern Generation in Jaw Motor Neurons During Rejection of Seaweed in Aplysia kurodai.
T. Nagahama, K. Narusuye, and H. Arai (1999)
J Neurophysiol 82, 2579-2589
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C-PR Neuron of Aplysia Has Differential Effects on "Feeding" Cerebral Interneurons, Including Myomodulin-Positive CBI-12.
I. Hurwitz, R. Perrins, Y. Xin, K. R. Weiss, and I. Kupfermann (1999)
J Neurophysiol 81, 521-534
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Multiple Memory Processes Following Training That a Food Is Inedible in Aplysia.
D. Botzer, S. Markovich, and A. J. Susswein (1998)
Learn. Mem. 5, 204-219
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An Identified Interneuron Contributes to Aspects of Six Different Behaviors in Aplysia.
Y. Xin, K. R. Weiss, and I. Kupfermann (1996)
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A Pair of Identified Interneurons in Aplysia that Are Involved in Multiple Behaviors Are Necessary and Sufficient for the Arterial-Shortening Component of a Local Withdrawal Reflex.
Y. Xin, K. R. Weiss, and I. Kupfermann (1996)
J. Neurosci. 16, 4518-4528
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