B4cl1 MOTONEURON

B4cl are a group of neurons located on the dorsal surface of each buccal ganglia. They surround the large B4 motoneuron. The B4cl neurons are electrically coupled with each other as well as with the B4 and B8 motoneurons. B4cl neurons innervates the anterior jugalis muscle in the buccal mass. During feeding cycles, B4cl neurons are active during the late rasp and early swallow phases. They are inhibited by rasp phase interneuron N2d, but not N2v, and swallow phase interneuron N3p and are electrically coupled with the swallow phase interneurons N3t, N3p and OC. They receive strong excitation from the modulatory interneuron, CGC.

References

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Benjamin, P.R., Rose, R.M., Slade, C.T., Lacy, M.G., 1979. Morphology of Identified Neurones in the Buccal Ganglia of Lymnaea Stagnalis. Journal of Experimental Biology 80, 119–135. https://doi.org/10.1242/jeb.80.1.119

McCrohan, C.R., Benjamin, P.R., 1980b. Synaptic relationships of the cerebral giant cells with motoneurones in the feeding system of Lymnaea stagnalis. J Exp Biol 85, 169–186. https://doi.org/10.1242/jeb.85.1.169

Rose, R.M., Benjamin, P.R., 1979. The relationship of the central motor pattern to the feeding cycle of Lymnaea stagnalis. J Exp Biol 80, 137–163. https://doi.org/10.1242/jeb.80.1.137

Staras, K., Kemenes, G., Benjamin, P.R., 1998. Pattern-generating role for motoneurons in a rhythmically active neuronal network. J Neurosci 18, 3669–3688. https://doi.org/10.1523/JNEUROSCI.18-10-03669.1998

Straub, V.A., Benjamin, P.R., 2001. Extrinsic modulation and motor pattern generation in a feeding network: a cellular study. J Neurosci 21, 1767–1778. https://doi.org/10.1523/JNEUROSCI.21-05-01767.2001

Vehovszky A, null, Elliott, C.J., 2001. Activation and reconfiguration of fictive feeding by the octopamine-containing modulatory OC interneurons in the snail Lymnaea. J Neurophysiol 86, 792–808. https://doi.org/10.1152/jn.2001.86.2.792