| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
The Journal of Neurophysiology Vol. 83 No. 3 March 2000, pp. 1346-1355
Copyright ©2000 by the American Physiological Society
Department of Molecular and Integrative Physiology and the Neuroscience Program, University of Illinois, Urbana, Illinois 61801
Jing, Jian and
Rhanor Gillette.
Escape Swim Network Interneurons Have Diverse Roles in Behavioral
Switching and Putative Arousal in Pleurobranchaea. J. Neurophysiol. 83: 1346-1355, 2000. Escape swimming in the predatory sea slug
Pleurobranchaea is a dominant behavior that overrides
feeding, a behavioral switch caused by swim-induced inhibition of
feeding command neurons. We have now found distinct roles for the
different swim interneurons in acute suppression of feeding during the
swim and in a longer-term stimulation of excitability in the feeding
network. The identified pattern-generating swim neurons A1, A3, A10,
and their follower interneuron A-ci1, suppress feeding motor output
partly by excitation of the I1 feeding interneurons, which
monosynaptically inhibit both the feeding command neurons,
PCP, PSE, and other major interneurons, the I2s. This
mechanism exerts broad inhibition of the feeding network suitable to an
escape response; broader than feeding suppression in learned and
satiation-induced food avoidance and acting through a different
presynaptic pathway. Four intrinsic neuromodulatory neurons of the swim
network, the serotonergic As1-4, add little to direct suppression of
feeding. Rather, they monosynaptically excite the serotonergic
metacerebral giant (MCG) neurons of the feeding network, themselves
intrinsic neuromodulators of feeding, as well as a cluster of adjacent
serotonergic feeding neurons, with both fast and slow EPSPs. They also
provide mild neuromodulatory excitation of the PCP/PSE
feeding command neurons, and I1 and I2 feeding interneurons, which is
masked by inhibition during the swim. As1-4 also excite the
serotonergic pedal ganglion G neurons for creeping locomotion. These
observations further delineate the nature of the putative serotonergic
arousal system of gastropods and suggest a central coordinating role to
As1-4.
This article has been cited by other articles:
|
|
 |
|
  J. Jing, F. S. Vilim, E. C. Cropper, and K. R. Weiss Neural Analog of Arousal: Persistent Conditional Activation of a Feeding Modulator by Serotonergic Initiators of Locomotion J. Neurosci., November 19, 2008; 28(47): 12349 - 12361. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 A. Berkowitz Physiology and Morphology of Shared and Specialized Spinal Interneurons for Locomotion and Scratching J Neurophysiol, June 1, 2008; 99(6): 2887 - 2901. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 W. H. Liden and J. Herberholz Behavioral and neural responses of juvenile crayfish to moving shadows J. Exp. Biol., May 1, 2008; 211(9): 1355 - 1361. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 R. Gillette Evolution and Function in Serotonergic Systems Integr. Comp. Biol., December 1, 2006; 46(6): 838 - 846. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L.-M. Tian, R. Kawai, and T. Crow Serotonin-Immunoreactive CPT Interneurons in Hermissenda: Identification of Sensory Input and Motor Projections J Neurophysiol, July 1, 2006; 96(1): 327 - 335. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. Marinesco, K. E. Kolkman, and T. J. Carew Serotonergic Modulation in Aplysia. I. Distributed Serotonergic Network Persistently Activated by Sensitizing Stimuli J Neurophysiol, October 1, 2004; 92(4): 2468 - 2486. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. Crow and L.-M. Tian Statocyst Hair Cell Activation of Identified Interneurons and Foot Contraction Motor Neurons in Hermissenda J Neurophysiol, June 1, 2004; 91(6): 2874 - 2883. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. Crow and L.-M. Tian Interneuronal Projections to Identified Cilia-Activating Pedal Neurons in Hermissenda J Neurophysiol, May 1, 2003; 89(5): 2420 - 2429. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. Jing and R. Gillette Directional Avoidance Turns Encoded by Single Interneurons and Sustained by Multifunctional Serotonergic Cells J. Neurosci., April 1, 2003; 23(7): 3039 - 3051. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. Esch and W. B. Kristan Jr. Decision-Making in the Leech Nervous System Integr. Comp. Biol., August 1, 2002; 42(4): 716 - 724. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C. J. H. Elliott and A. J. Susswein Comparative neuroethology of feeding control in molluscs J. Exp. Biol., April 1, 2002; 205(7): 877 - 896. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
I. R. Popescu and W. N. Frost Highly Dissimilar Behaviors Mediated by a Multifunctional Network in the Marine Mollusk Tritonia diomedea J. Neurosci., March 1, 2002; 22(5): 1985 - 1993. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
P. S. Katz, D. J. Fickbohm, and C. P. Lynn-Bullock Evidence that the Central Pattern Generator for Swimming in Tritonia Arose from a Non-Rhythmic Neuromodulatory Arousal System: Implications for the Evolution of Specialized Behavior Integr. Comp. Biol., August 1, 2001; 41(4): 962 - 975. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. Gillette and J. Jing The Role of the Escape Swim Motor Network in the Organization of Behavioral Hierarchy and Arousal in Pleurobranchaea Integr. Comp. Biol., August 1, 2001; 41(4): 983 - 992. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Y. Xin, J. Koester, J. Jing, K. R. Weiss, and I. Kupfermann Cerebral-Abdominal Interganglionic Coordinating Neurons in Aplysia J Neurophysiol, January 1, 2001; 85(1): 174 - 186. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 R. Gillette, R.-C. Huang, N. Hatcher, and L. L. Moroz Cost-benefit analysis potential in feeding behavior of a predatory snail by integration of hunger, taste, and pain PNAS, March 28, 2000; 97(7): 3585 - 3590. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| Visit Other APS Journals Online |
