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Self-sustained oscillations of electric potential in a model membrane
Biophysical Chemistry, 1986A model membrane constructed from a Millipore filter, whose pores are filled with dioleyl phosphate molecules, exhibits a self-oscillation of the electric potential with a period of about a few seconds in the presence of a salt-concentration difference, pressure difference and/or electric current across the filter.
K, Toko +3 more
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A membrane potential model with counterions for cytosolic calcium oscillations
Cell Calcium, 1994An initial model has been proposed to describe a mechanism for cytosolic calcium oscillations [Jafri MS. Vajda S. Pasik P. Gillo B. (1992) A membrane model for cytosolic calcium oscillations: a study using Xenopus oocytes. Biophys. J., 63, 235-246]. In this paper we extend our original model to include the effects of counterion movement into the ER in ...
M S, Jafri, B, Gillo
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Oscillations of Membrane Potential across a Polypeptide Membrane, Induced by an Electrical Current
Biochemical and Biophysical Research Communications, 1998Oscillation of membrane potential across a tri-block copolypeptide membrane composed of (Glu)x-(Leu)y-(Glu)x (x = 0.18 and y = 0.64) was observed under an electrical current, when the membrane was placed between equimolar aqueous salt solutions. The amplitude of the oscillation was influenced by the type of cation and anion in the external salt ...
N, Minoura +3 more
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Membrane Potential Oscillations In Molluscan “Burster” Neurones
Journal of Experimental Biology, 1979ABSTRACT Membrane potential oscillations can be induced in molluscan neurones under a variety of artificial conditions. In the so-called ‘burster’ neurones oscillations are generated even in isolated cells. A likely mechanism for ‘bursting’ involves the following ionic currents: A transient inward current carried by Na ...
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Oscillation of membrane potential in ion–complex membranes of DNA and hexamethylenediamine
Journal of the Chemical Society, Faraday Transactions, 1998Ion–complex membranes of DNA and hexamethylenediamine generated oscillations in the membrane potential under a concentration gradient of several salts at frequencies between 0 and 5 Hz at pH 7.0. These rhythmic and synchronized oscillations can be regarded as a simple model of non-linear phenomena observed in organs and cells.
Akon Higuchi +3 more
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Self-Sustained Oscillations of Membrane Potential in DOPH-Millipore Membranes
Journal of the Physical Society of Japan, 1982Self-sustained oscillations of membrane potential in an artificial model membrane, where dioleyl phosphate (DOPH) is infiltrated into pores of a Millipore filter, are investigated both experimentally and theoretically. Spike-like self-oscillations with an extremely long period of about one hour were observed for membranes with large adsorbed amounts of
Kiyoshi Toko +3 more
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Bulletin of the Chemical Society of Japan, 1997
Abstract Novel oscillations of membrane current or membrane potential were observed when the transfer of Na+ from one aqueous solution (W1) containing 0.1 M NaCl to another (W2) in the absence of Na+ through a liquid membrane (LM) containing dilute Na+ was forced by an applied membrane potential or membrane current, respectively.
Kohji Maeda +3 more
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Abstract Novel oscillations of membrane current or membrane potential were observed when the transfer of Na+ from one aqueous solution (W1) containing 0.1 M NaCl to another (W2) in the absence of Na+ through a liquid membrane (LM) containing dilute Na+ was forced by an applied membrane potential or membrane current, respectively.
Kohji Maeda +3 more
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Minimal models of electric potential oscillations in non-excitable membranes
European Biophysics Journal, 2009Sustained oscillations in the membrane potential have been observed in a variety of cellular and subcellular systems, including several types of non-excitable cells and mitochondria. For the plasma membrane, these electrical oscillations have frequently been related to oscillations in intracellular calcium.
Guillermo, Perdomo, Julio A, Hernández
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Subthreshold oscillations of membrane potential of rat subfornical organ neurons
NeuroReport, 2007Previous work has demonstrated that subfornical organ neurons exhibit spontaneous action potentials interspersed with periods of membrane potential oscillation. We used whole cell patch clamp recording to investigate properties of these oscillations. The amplitude, but not the frequency, of the oscillations exhibited voltage dependence.
Mark, Fry, Alastair V, Ferguson
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Spontaneous oscillation of electrical potential across organic liquid membranes
Biophysical Chemistry, 1983An artificial membrane was studied consisting of an oil layer, nitrobenzene containing picric acid, imposed between two aqueous phases, one of which contained 5 mM hexadecyltrimethylammonium bromide (CTAB) and 5% ethanol. It was found that this system shows rhythmic and sustained oscillation of the electrical potential within the range 150-300 mV with ...
K, Yoshikawa, Y, Matsubara
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