Results 231 to 240 of about 35,404 (265)
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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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Oscillations of membrane potential in L cells
The Journal of Membrane Biology, 1979Effects of divalent cations on oscillations of membrane potentials (i.e., spontaneous repetitive hyperpolarizing responses) and on hyperpolarizing responses induced by electrical stimuli as well as on resting potentials were studied in large nondividing L cells.
Y, Okada, W, Tsuchiya, A, Inouye
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Oscillating and triggering properties of T cell membrane potential
Immunology Letters, 1990Using the patch-clamp technique, membrane potential (MP) behaviour under different electrogenic stimuli for both resting and Con A-activated T lymphocytes was studied. The voltage-gated K+ channels stabilize MP at the level of their threshold of activation (-44 +/- 5 mV, n = 27).
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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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Membrane potential oscillations in enzymatically isolated rat myocardial cells
Acta Physiologica Scandinavica, 1983Enzymatical isolation was used for preparation of single myocardial cells, contractions of which were mainly of slow phasic type but normal fast contractions also occurred. Membrane potential (MP) changes of these cells were measured by conventional micro‐electrode techniques.
H, Lehto, A, Talo, R, Tirri, M, Vornanen
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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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Subthreshold membrane potential oscillations of type A neurons in injured DRG
Brain Research, 2001An abundance of subthreshold membrane potential oscillations (SMPOs) at resting potential was observed in the neurons of chronically compressed dorsal root ganglia (DRG) using intracellular recording in vivo. Out of 386 neurons, 63 type A neurons displayed SMPOs.
J L, Xing, S J, Hu, K P, Long
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Diabetes, 2002
A model for the relationship between ionic and metabolic oscillations and plasma insulin oscillations is presented. It is argued that the pancreatic β-cell in vivo displays two intrinsic frequencies that are important for the regulation of plasma insulin oscillations.
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A model for the relationship between ionic and metabolic oscillations and plasma insulin oscillations is presented. It is argued that the pancreatic β-cell in vivo displays two intrinsic frequencies that are important for the regulation of plasma insulin oscillations.
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Membrane potential oscillation from a novel combination of ion channels
American Journal of Physiology-Cell Physiology, 1993Single pigmented epithelial cells from the ciliary body of the eye were studied using the whole cell voltage and current clamp, permeabilized patch recording, and patch-clamp recording. These cells can produce two types of oscillation. Both are slow, with a period in the range of 1-2 min; one has a low amplitude and oscillates between -60 and -80 mV ...
J W, Stelling, T J, Jacob
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Modelling Oscillations of Membrane Potential Difference
2007The oscillation of the membrane potential difference (PD) is considered in terms of one or more ion transporters changing their conductances. For slow oscillations (period greater than about one minute), the transporters could be identified by employing the current–voltage (I/V) technique.
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