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Science 19 March 1971:
Vol. 171. no. 3976, pp. 1170 - 1173
DOI: 10.1126/science.171.3976.1170
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Articles

Oscillator Neurons in Crustacean Ganglia

Martin Mendelson 1

1 Department of Physiology and Biophysics, New York University School of Medicine, New York 10016, and Marine Biological Laboratory, Woods Hole, Massachusetts 02543

The motor rhythm of ventilation in hermit crabs and lobsters appears to be controlled by a pair of neurons, one in each half of the subesophageal ganglion. Their membrane potentials oscillate and upon depolarization and hyperpolarization elicit spiking in two pools of motor neurons on each side, without spikes in the oscillator neurons themselves. The fact that higher order (command) interneurons can control the rate of the oscillator by means of a smoothly graded input lends support to the idea that oscillator neurons respond periodically to a constant ionic stimulus.


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Science. ISSN 0036-8075 (print), 1095-9203 (online)