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Science 23 September 1983:
Vol. 221. no. 4617, pp. 1312 - 1314
DOI: 10.1126/science.6137060
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Articles

Science, Vol 221, Issue 4617, 1312-1314
Copyright © 1983 by American Association for the Advancement of Science

articles

Which behavior does the lamprey central motor program mediate?

J Ayers, GA Carpenter, S Currie, and J Kinch

The isolated lamprey spinal cord, when bathed in 2 millimolar D-glutamic acid, will generate a pattern of motor neuron discharge that has generally been assumed to represent the central motor program for swimming. Motion pictures of behaving lampreys were analyzed by a computer algorithm to estimate undulatory movement parameters that could be directly compared with those generated during D-glutamate--induced undulations. The D-glutamate--induced movement parameters were significantly different from those observed during normal behaviors, including swimming, but accurately predicted the undulations produced by spinally transected adult lampreys.


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