Summary
A large interneurone responding to stimulation both by wind on the head and to light is described in the locust,Schistocerca gregaria. The neurone has been filled with cobalt and intensified with silver. Its cell body lies in the brain. There is a tuft of fine branches in the tritocerebrum which receives input from the primary sensory projections of the sensory hairs on the head. The neurone descends to the suboesophageal and thoracic ganglia via the tritocerebral commissure and branches extensively in each ganglion on the side contralateral to the projection in the brain. The response of the neurone to both stimulus modes has been recorded at the tritocerebral commissure.
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We thank David Carden and John Simpson for advice and construction of the stimulating apparatus, and Jon Banks for his expertise with the Biomac averager. Prof. F. Huber is thanked for his critical reading of the manuscript. Jon Bacon was supported in this work by the Hulme Hall Foundation (University of Manchester).
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Bacon, J., Tyrer, M. The tritocerebral commissure giant (TCG): A bimodal interneurone in the locust,Schistocerca gregaria . J. Comp. Physiol. 126, 317–325 (1978). https://doi.org/10.1007/BF00667101
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DOI: https://doi.org/10.1007/BF00667101