MODIFICATION OF THE ELECTRIC RESPONSE OF A SINGLE RANVIER NODE BY NARCOSIS, REFRACTORINESS AND POLARIZATION

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Abstract
Oscillograms were taken of the action current resulting from excitation, with long rectangular current pulses, of a single node of Ranvier (toad''s motor nerve fiber) under varying exptl. conditions. Application of urethane to the node decreased the size of the response, lengthened the crest-time and shortened the duration and the latent period of the action current. Refractoriness and catelectrotonus resulted in similar changes, and anelectrotonus brought about opposite effects.

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