Title :
Reactance of biological membranes
Author :
Sabah, Narsir H.
Author_Institution :
Fac. of Eng. & Archit., American Univ. of Beirut, Lebanon
Abstract :
Discusses the reactance of a voltage-gated channel that obeys first-order kinetics, where the current-voltage characteristic is derived and linearized at an arbitrary quiescent point. It is shown that the reactance is inductive in the high-conductance region of the characteristic, where the incremental conductance is larger than the chord conductance; that the reactance is capacitive in the low-conduciance region, where the incremental conductance is smaller than the chord conductance; and that the reactance vanishes at the equilibrium potential. The values of the elements of the equivalent circuit are derived as a function of membrane voltage and parameters, and some general aspects of the reactance of biological membranes are discussed
Keywords :
bioelectric phenomena; biomembrane transport; electric reactance; equivalent circuits; arbitrary quiescent point; biological membranes reactance; chord conductance; current-voltage characteristic; equilibrium potential; first-order kinetics; high-conductance region; low-conducance region; membrane electrophysiology; voltage-gated channel; Biomembranes; Circuits; Displays; Frequency; Immune system; Kinetic theory; Large Hadron Collider; Nerve fibers; Temperature; Voltage;
Journal_Title :
Engineering in Medicine and Biology Magazine, IEEE
