MEMBRANE AND PROTOPLASM RESISTANCE IN THE SQUID GIANT AXON

The direct current longitudinal resistance of the squid giant axon was measured as a function of the electrode separation. Large sea water electrodes were used and the inter-electrode length was immersed in oil. The slope of the resistance vs. separation curve is large for a small electrode separat...

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Main Authors:	Cole, Kenneth S., Hodgkin, Alan L.
Format:	Online
Language:	English
Published:	The Rockefeller University Press 1939
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2142005/

id	pubmed-2142005
recordtype	oai_dc
spelling	pubmed-21420052008-04-23 MEMBRANE AND PROTOPLASM RESISTANCE IN THE SQUID GIANT AXON Cole, Kenneth S. Hodgkin, Alan L. Article The direct current longitudinal resistance of the squid giant axon was measured as a function of the electrode separation. Large sea water electrodes were used and the inter-electrode length was immersed in oil. The slope of the resistance vs. separation curve is large for a small electrode separation, but becomes smaller and finally constant as the separation is increased. An analysis of the resistance vs. length curves gives the following results. The nerve membrane has a resistance of about 1000 ohm cm.2 The protoplasm has a specific resistance of about 1.4 times that of sea water. The resistance of the connective tissue sheath outside the fiber corresponds to a layer of sea water about 20µ in thickness. The characteristic length for the axon is about 2.3 mm. in oil and 6.0 mm. in sea water. The Rockefeller University Press 1939-05-20 /pmc/articles/PMC2142005/ /pubmed/19873126 Text en Copyright © Copyright, 1939, by The Rockefeller Institute for Medical Research This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/).
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Cole, Kenneth S. Hodgkin, Alan L.
spellingShingle	Cole, Kenneth S. Hodgkin, Alan L. MEMBRANE AND PROTOPLASM RESISTANCE IN THE SQUID GIANT AXON
author_facet	Cole, Kenneth S. Hodgkin, Alan L.
author_sort	Cole, Kenneth S.
title	MEMBRANE AND PROTOPLASM RESISTANCE IN THE SQUID GIANT AXON
title_short	MEMBRANE AND PROTOPLASM RESISTANCE IN THE SQUID GIANT AXON
title_full	MEMBRANE AND PROTOPLASM RESISTANCE IN THE SQUID GIANT AXON
title_fullStr	MEMBRANE AND PROTOPLASM RESISTANCE IN THE SQUID GIANT AXON
title_full_unstemmed	MEMBRANE AND PROTOPLASM RESISTANCE IN THE SQUID GIANT AXON
title_sort	membrane and protoplasm resistance in the squid giant axon
description	The direct current longitudinal resistance of the squid giant axon was measured as a function of the electrode separation. Large sea water electrodes were used and the inter-electrode length was immersed in oil. The slope of the resistance vs. separation curve is large for a small electrode separation, but becomes smaller and finally constant as the separation is increased. An analysis of the resistance vs. length curves gives the following results. The nerve membrane has a resistance of about 1000 ohm cm.2 The protoplasm has a specific resistance of about 1.4 times that of sea water. The resistance of the connective tissue sheath outside the fiber corresponds to a layer of sea water about 20µ in thickness. The characteristic length for the axon is about 2.3 mm. in oil and 6.0 mm. in sea water.
publisher	The Rockefeller University Press
publishDate	1939
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2142005/
_version_	1611422961354407936

MEMBRANE AND PROTOPLASM RESISTANCE IN THE SQUID GIANT AXON

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