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Science 1 November 1974:
Vol. 186. no. 4162, pp. 451 - 454
DOI: 10.1126/science.186.4162.451

Articles

Presynaptic Inhibition: Primary Afferent Depolarization in Crayfish Neurons

Donald Kennedy 1, Ronald L. Calabrese 1, and Jeffrey J. Wine 2

1 Department of Biological Sciences, Stanford University, Stanford, California 94305
2 Department of Psychology, Stanford University, Stanford, California 94305

Inhibition of transmission between tactile sensory neurons and interneurons in the crayfish was investigated by intracellular recording int the presynaptic processes. Inhibition is correlated with a depolarization of the presynaptic process, as in the mammalian spinal cord; the depolarization is accompanied by a conductance increase, and is mediated by interneurons that can be excited by a variety of routes.


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