Membrane Current Noise in Lobster Axon under Voltage Clamp
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چکیده
منابع مشابه
Current-Voltage Relations in the Lobster Giant Axon Membrane Under Voltage Clamp Conditions
The sucrose-gap method introduced by Stämpfli provides a means for the application of a voltage clamp to the lobster giant axon, which responds to a variety of different experimental procedures in ways quite similar to those reported for the squid axon and frog node. This is particularly true for the behavior of the peak initial current. However, the steady state current shows some differences....
متن کاملMembrane conductance and current-voltage relation in the squid axon under voltage-clamp.
,4BSTRACT TASAKI, I. AND C. S. SPYROPOULOS. Membrane conductance and currentvoltage relation in the squid axon under ‘voltage-clamp.’ &L-The conductance of the squid axon membrane under ‘voltage-clamp’ was measured by superposing a sinusoidal wave upon rectangular clamping voltage pulses. It was possible to determine the time course of the emf of the membrane under ‘voltage-clamp’ on a single p...
متن کاملCurrent-voltage relations in the isolated giant axon of the cockroach under voltage-clamp conditions.
Our understanding of the ionic exchanges taking place at the nerve membrane during electrical activity has been greatly increased by the application of the voltageclamp technique. This experimental method consists of the application of a stepwise change in potential to a given area of membrane and the simultaneous measurement of the current flow produced by this given potential gradient. The vo...
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TASAKT, I. AND C. S. SPYROPOULOS. Nonunijorm response in the squid axon membrane under ‘voltage-clamp.’ Am. J. Physiol. 193(2): 309-317. 1958.-By cooling a portion of the squid giant axon at a time, it was shown that the repetitive membrane currents observed under the so-called voltageclamp conditions derived from the main portion of the ‘clamped’ axon membrane and not from the lateral unclampe...
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Transient responses of a space-clamped squid axon membrane to step changes of voltage or current are often approximated by exponential functions of time, corresponding to a series resistance and a membrane capacity of 1.0 muF/cm(2). Curtis and Cole (1938, J. Gen. Physiol.21:757) found, however, that the membrane had a constant phase angle impedance z = z(1)(jomegatau)(-alpha), with a mean alpha...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 1971
ISSN: 0006-3495
DOI: 10.1016/s0006-3495(71)86209-4