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March 1, 1949The Journal of PhysiologyOpen Access

The effect of sodium ions on the electrical activity of the giant axon of the squid

A. L. Hodgkin B. Katz

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Key Points

This research aims to explore how sodium ions influence the electrical activity of the squid's giant axon.
Utilized voltage clamp techniques to measure electrical activity.
Performed experiments under varying sodium ion concentrations in the extracellular solution.
Investigated the role of ion channels in generating action potentials.
Increased sodium ion concentration enhanced action potential frequency significantly.
Demonstrated that sodium ions are essential for depolarization during action potentials.
Effectively, the presence of sodium ions correlates with increased excitability of the giant axon.

Implication

Experimental investigation reveals how sodium ions impact electrical activity in squid axons, suggesting key insights into neuronal function.

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Cite This Study

Hodgkin et al. (1949) studied this question.

synapsesocial.com/papers/69d7bf1bf39344339dd17e4b https://doi.org/10.1113/jphysiol.1949.sp004310

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Keep reading

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

1ELECTRIC IMPEDANCE OF THE SQUID GIANT AXON DURING ACTIVITYOriginal Research · 1939 · 573 citations
2Electronic Measurement of the Intracellular Concentration and Net Flux of Sodium in the Squid AxonOriginal Research · 1961 · 27 citations
3Dual effect of Nai+ on Ca2+ influx through the Na+/Ca2+ exchanger in dialyzed squid axons. Experimental data confirming the validity of the squid axon kinetic modelpreclinical · 2008 · 2 citations
4Current-Voltage Relations in the Lobster Giant Axon Membrane Under Voltage Clamp ConditionsOriginal Research · 1962 · 165 citations
5Depolarization and calcium entry in squid giant axonsIn Vitro Study · 1971 · 728 citations

Interactions of Calcium with Sodium and Potassium in Membrane Potentials of the Lobster Giant Axon1960
Intracellular sodium activity and the sodium pump in snail neurones1972
The Effects of Mechanical Stimulation on Some Electrical Properties of Axons1962
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