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BioelectromagnetismPrinciples and Applications of Bioelectric and Biomagnetic Fields$
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Jaakko Malmivuo and Robert Plonsey

Print publication date: 1995

Print ISBN-13: 9780195058239

Published to Oxford Scholarship Online: March 2012

DOI: 10.1093/acprof:oso/9780195058239.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 21 October 2021

Subthreshold Membrane Phenomena

Subthreshold Membrane Phenomena

(p.44) Chapter 3 Subthreshold Membrane Phenomena

Jaakko Malmivuo

Oxford University Press

This chapter describes the physiological basis of the resting voltage and the subthreshold response of an axon to electric stimuli from a quantitative perspective. The membrane plays an important role in establishing the resting and active electric properties of an excitable cell, through its regulation of the movement of ions between the extracellular and intracellular spaces. The word ion (Greek for “that which goes”) was introduced by Faraday (1834). The ease with which an ion crosses the membrane, namely the membrane permeability, differs among ion species; this selective permeability will be seen to have important physiological consequences. Activation of a cell affects its behavior by altering these permeabilities.

Keywords:   axon, electric stimuli, ions, extracellular spaces, membrane permeability, selective permeability

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