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PMID: 1151828 Published · ppublish English Journal Article

Potassium and sodium ion current noise in the membrane of the squid giant axon.

The Journal of physiology ·Vol. 248 ·No. 1 ·1975-06-00 ·Pages 45-82

Conti F, De Felice LJ, Wanke E

Abstract

1. The spectral density of current noise power from 20 mm segments of giant axons of the squid Loligo vulgaris has been measured under space-clamp and voltage-clamp conditions. From 4 to 1000 Hz the measured noise is larger by several orders of magnitude than the theoretical thermal noise. The amplifier's noise, which may yield appreciable contributions above 200 Hz, could be evaluated and subtracted from the total noise using direct measurements of the membrane impedance...

MeSH Terms
Action Potentials Animals Axons/drug effects,physiology Decapodiformes Electric Conductivity Electrophysiology In Vitro Techniques Kinetics Membrane Potentials Potassium/physiology Sodium/physiology Temperature Tetraethylammonium Compounds/pharmacology Tetrodotoxin/pharmacology
Chemicals
Tetraethylammonium Compounds Tetrodotoxin Sodium Potassium
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Conti F
De Felice L J
Wanke E
References (23)
23 references, click to expand
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Article Info
Journal
The Journal of physiology
Abbr.
J Physiol
ISSN
0022-3751
DOI
10.1113/jphysiol.1975.sp010962
Published
1975-06-00
Pages
45-82
Language
English
Region
England
NLM ID
0266262
PMCID
PMC1309507
Subset
IM
External Links
PubMed source DOI: 10.1113/jphysiol.1975.sp010962 PMC Full Text View journal details
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