Summary
An excised, perfused anterior-end preparation is described for investigating sensory integration in the cephalic ganglion of crustaceans. This preparation is used to demonstrate that information derived from chemical stimulation of the antennules descends interneurons in the esophageal connectives from the brain. These neurons, all multimodal, are of three types based on their response to chemostimulation. Type 1 is spontaneously inactive and excited by chemostimulation. The other two types discharge spontaneously between 2–5 Hz and are either excited (type 2) or inhibited (type 3) by chemostimulation. It is suggested these interneurons are components of neural circuits responsible for triggering and/or modulating feeding movements in the Murray crayfish.
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We thank Dr. Lon Wilkens for critically reading the manuscript. Supported in part by a grant from the Whitehall Foundation.
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Ache, B.W., Sandeman, D.C. Olfactory-induced central neural activity in the Murray crayfish,Euastacus armatus . J. Comp. Physiol. 140, 295–301 (1980). https://doi.org/10.1007/BF00606270
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DOI: https://doi.org/10.1007/BF00606270