Journal of comparative physiology

, Volume 100, Issue 2, pp 161–182 | Cite as

Organization of the stomatogastric ganglion of the spiny lobster

IV. The pyloric system
  • Donald M. Maynard
  • Allen I. Selverston


  1. 1.

    The pyloric system of the lobster stomach is controlled by fourteen neurons contained within the Stomatogastric ganglion, of which 13 are identified as motor neurons.

  2. 2.

    The neurons are functionally organized into dilators and constrictors of the pyloric region of the stomach.

  3. 3.

    The motor output occurs in the form of bursts to antagonistic muscles.

  4. 4.

    The synaptic connections between motor neurons are either inhibitory or electrotonic.

  5. 5.

    The basic rhythmicity derives from a group of three neurons with endogenous burst capability. The observed phase relationships in the other neurons results from the synaptic connectivity. The cyclic motor output can occur in the deafferented preparation.



Motor Neuron Phase Relationship Synaptic Connection Motor Output Spiny Lobster 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Dando, M. R., Selverston, A. I.: Command fibres from the supra-esophageal to the stomatogastric ganglion inPanulirus argus. J. comp. Physiol.78, 138–175 (1972)Google Scholar
  2. Hartline, D. K., Maynard, D. M.: Motor patterns in the stomatogastric ganglion of the lobster,Panulirus argus. J. comp. Physiol., in press (1975)Google Scholar
  3. Johnstone, J. R., Mark, R. F.: The efference copy neuron. J. exp. Biol.54, 403–414 (1972)Google Scholar
  4. Kater, S.: Feeding inHelisoma trivolvis: The morphological and physiological basis of a fixed action pattern. Amer. Zool.14, 1017–1036 (1974)Google Scholar
  5. Kupfermann, I., Carew, T. J., Kandel, E. R.: Local, reflex and central commands controlling gill and siphon movements inAplysia. J. Neurophysiol.37, 999–1019 (1974)Google Scholar
  6. Maynard, D. M.: Simpler Networks. Ann. N.Y. Acad. Sci.193, 59–72 (1972)Google Scholar
  7. Maynard, D. M., Dando, M. R.: The structure of the stomatogastric neuromuscular system inCallinectes sapidus, Homarus americanus andPannlirus argus. Phil. Trans. B268, 161–220 (1974)Google Scholar
  8. Morris, J., Maynard, D. M.: Recordings from the stomatogastric nervous system in intact lobsters. Comp. Biochem. Physiol.33, 969–974 (1970)Google Scholar
  9. Mulloney, B., Selverston, A.: Organization of the stomatogastric ganglion of the spiny lobster I. Neurons driving the lateral teeth. J. comp. Physiol.91, 1–32 (1974a)Google Scholar
  10. Mulloney, B., Selverston, A. I.: Organization of the stomatogastric ganglion of the spiny lobster III. Coordination of the two subsets of the gastric system. J. comp. Physiol.91, 53–78 (1974b)Google Scholar
  11. Ort, Carol A., Kristan, W. B., Stent, G. S.: Neuronal control of swimming in the medicinal leech II. Identification and connections of motor neurons. J. comp. Physiol.94, 121–154 (1974)Google Scholar
  12. Selverston, A. I.: Structural and functional basis of motor pattern generation in the stomatogastric ganglion of the lobster. Amer. Zool.14, 957–972 (1974)Google Scholar
  13. Selverston, A. I., Mulloney, B.: Organization of the stomatogastric ganglion of the spiny lobster II. Neurons driving the medial tooth. J. comp. Physiol.91, 33–51 (1974)Google Scholar
  14. Spira, M. E., Bennett, M. V. L.: Synaptic control of electrotonic coupling between neurons. Brain Res.37, 294–300 (1972)Google Scholar
  15. Willows, A. O. D., Dorsett, D. A., Hoyle, G.: The neuronal basis of behavior inTritonia. III. Neuronal mechanism of a fixed action pattern. J. Neurobiol.4, 255–285 (1973)Google Scholar
  16. Zucker, R. S.: Crayfish escape behavior and central synapses. I. Neural circuit exciting lateral giant fiber. J. Neurophysiol.35, 399–620 (1972)Google Scholar

Copyright information

© Springer-Verlag 1975

Authors and Affiliations

  • Donald M. Maynard
    • 1
    • 2
  • Allen I. Selverston
    • 1
    • 2
  1. 1.Department of BiologyUniversity of CaliforniaSan Diego, La JollaUSA
  2. 2.Bermuda Biological Station for ResearchSt. Georges WestBermuda

Personalised recommendations