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. 1979 Apr;289:83–97. doi: 10.1113/jphysiol.1979.sp012726

Charge movement and membrane capacity in frog muscle.

R H Adrian, A Peres
PMCID: PMC1281359  PMID: 458722

Abstract

1. The transient current required to impose a step charge of potential has a complex time course especially in the region of internal potential between -50 and -40 mV. 2. Examination of non-linear transient current in this voltage range suggests two components of charge movement: (a) an initial more-or-less exponential movement, and (b) a slower component with a complex time course. 3. Measurements of membrane capacity support such a division and confirm the steeper voltage dependence of the slower charge movement. 4. Permanent depolarization to 40 mV appears to immobilize the slowly moving charge. Depolarization to -20 mV immobilizes both charge movements, and uncovers the presence of a third charge which seems to correspond to Charge 2 (cf. Adrian & Almers, 1976b; Adrian, Chandler & Rakowski, 1976).

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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