Abstract
A novel excitatory higher-order input (named Input-HO) to the feeding network of the pond snail, Lymnaea stagnalis, as well as a reliable procedure that makes it possible to initiate and maintain the Input-HO, are described. The Input-HO is primarily targeted to two bilaterally symmetrical pairs of extrabuccal projecting interneurons, the serotonergic Cerebral Giant Cells (CGCs or C1) and FMRFamidergic Pleural-Buccal cells (PlBs). Judging from the results of transection experiments, Input- HO originates in the paired cerebral ganglia where its left and right sources coexist. These sources discharge independently or, sometimes, one after the other. Both inputs project to the ipsilateral CGC/PlB only. In turn, the activity of PlB decreases the frequency of Input-HO bouts. We suggest that the Input- HO represents a prominent part of the mechanism controlling feeding behavior in Lymnaea.
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Alania, M., Vorontsov, D.D. & Sakharov, D.A. Higher-Order Control of the Feeding Network in Lymnaea. BIOLOGIA FUTURA 59 (Suppl 2), 23–28 (2008). https://doi.org/10.1556/ABiol.59.2008.Suppl.3
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DOI: https://doi.org/10.1556/ABiol.59.2008.Suppl.3