The Journal of General Physiology
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The Journal of General Physiology, Vol 19, 943-950, Copyright © 1936 by The Rockefeller University Press

ARTICLE

ADAPTATION OF CUTANEOUS TACTILE RECEPTORS

VI. INHIBITORY EFFECTS OF POTASSIUM AND CALCIUM



Hudson Hoagland 1

1 From the Physiological Laboratory, Clark University, Worcester

1. Both solutions of Ringer plus fifteen times the normal K content, and solutions of Ringer plus fifteen times the normal Ca content markedly hasten the adaptation of single freely branching axon endings in frog's skin to repetitive air puff stimuli.

2. The K effect is produced more rapidly than is that of Ca. The K effect is reversible by washing with Ringer's solution, while the Ca effect is not. The Ca inhibition can, however, be reversed and recovery effected by washing with K rich solutions.

3. Evidence is discussed which indicates that Ca probably plays no rôle in normal adaptation, and the experiments are interpreted as substantiating the hypothesis of adaptation due to K.

Accepted on November 1, 1935


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Home page
 Cold Spring Harb Symp Quant BiolHome page
H. Hoagland
ON THE MECHANISM OF ADAPTATION (PERIPHERAL SENSORY INHIBITION) OF MECHANORECEPTORS
Cold Spring Harb Symp Quant Biol, January 1, 1936; 4(0): 347 - 357.
[Abstract] [PDF]


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