CORTICAL EXCITATORY STATE AND SYNCHRONISM IN THE CONTROL OF BIOELECTRIC AUTONOMOUS RHYTHMS

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Excerpt

The analysis of the action potential of the axon, especially as regards the spike, describes quite completely and accurately the phasic, all-or-none, aspects of the electrical activity of the axon. Since the recent work of Gasser and his associates (1) on after-potentials and the work of Levin (2) and Furusawa (3) on the retention of negativity in crustacean axons, more attention has been directed to a different type of electrical change in the axon occurring as a result of its activity. This slow summated depolarization which does not behave in an all-or-none manner, and which is very slow in recovery compared to the spike and negative after-potential, represents the more “tonic” change in the steady state of the axon, a process with which we are greatly concerned in any discussion of the electrical activity of the central nerve cells. There is some evidence from the work of Monnier and Jasper...

Footnotes

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    * I wish to acknowledge with thanks the permission to report some experiments in this paper performed in collaboration with Dr. Howard L. Andrews, Dr. Margaret Rheinberger, Miss Ruth M. Cruickshank and other graduate students of Brown University.

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