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Journal of Experimental Biology 92,203-228 (1981)
Published by Company of Biologists 1981

Interneuronal Control of Feeding in the Pond Snail Lymnaea Stagnalis : II. The Interneuronal Mechanism Generating Feeding Cycles

R. M. ROSE ¹ and P. R. BENJAMIN ²

¹ School of Biological Sciences, University of Sussex Falmer, Brighton, Sussex BN1 9QG; Department of Physiology, University College, Cardiff, P.O. Box 78, Cardiff, F1 1XL
² School of Biological Sciences, University of Sussex Falmer, Brighton, Sussex BN1 9QG

The feeding cycle of Lymnaea is generated by a network of three types of interneurone, N1, N2 and N3. This network is driven by the slow oscillator (SO) interneurone described in the previous paper. Interaction between the different interneurones is dependent on both connectivity and endogenous properties, and utilizes such properties as post-inhibitory rebound and self-feedback within electrically-coupled populations. Each of the four components of the interneuronal network (SO, N1, N2 and N3) is responsible for a different phase of synaptic input to the follower cell population which was previously shown to directly control feeding movements.

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