Results 131 to 140 of about 36,785 (167)
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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 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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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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European Journal of Neuroscience, 2002
AbstractThe actions of ciguatoxins from the Pacific (P‐CTX‐1) and Caribbean (C‐CTX‐1) regions were investigated in isolated parasympathetic neurons from rat intracardiac ganglia using patch‐clamp recording techniques. Under current‐clamp conditions, bath application of P‐CTX‐1 (1–10 nm) or C‐CTX‐1 (10–30 nm) caused a gradual depolarization that was ...
Hogg, Ron C +2 more
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AbstractThe actions of ciguatoxins from the Pacific (P‐CTX‐1) and Caribbean (C‐CTX‐1) regions were investigated in isolated parasympathetic neurons from rat intracardiac ganglia using patch‐clamp recording techniques. Under current‐clamp conditions, bath application of P‐CTX‐1 (1–10 nm) or C‐CTX‐1 (10–30 nm) caused a gradual depolarization that was ...
Hogg, Ron C +2 more
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Simulation of the light-induced oscillations of the membrane potential in Potamogeton leaf cells
The Journal of Membrane Biology, 1993An attempt has been made to simulate the light-induced oscillations of the membrane potential of Potamogeton lucens leaf cells in relation to the apoplastic pH changes. Previously it was demonstrated that the membrane potential of these cells can be described in terms of proton movements only.
MIEDEMA, H, PRINS, HBA
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Stable Potential Oscillation of Lipid Membrane Supported by a Micropore
Japanese Journal of Applied Physics, 1991A rhythmic, sustained, stable potential oscillation was reproducibly observed for a lipid membrane supported by a micropore of a thin membrane tip micropipette. Amplitude and period of the oscillation voltage was controlled by changing the pore diameter. The relationship between oscillation period and pore diameter when the pore diameter was below
Seimei Sha +4 more
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Caffeine-induced oscillations of the membrane potential inAplysia neurons
Neurophysiology, 2000It has been found in culturedAplysia neurons, including L7 and L2–L6 neurons, that bath application of 40 mM caffeine evokes oscillations of the membrane potential (MP) with the amplitude of about 40 mV. The frequency of oscillations, on the crest of which action potentials (AP) arise, varied from 0.2 to 0.5 sec1.
A. O. Komendantov, N. I. Kononenko
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Oscillating Streaming Potential and Electro-osmosis of Multilayer Membranes
The Journal of Physical Chemistry B, 2004Artificial membranes consist of multilayers that have different physical or chemical properties. They are often considered as an equivalent single-layer membrane without taking into account the detail inside. Based on the Debye−Huckel approximation, we have provided analytical solutions of oscillating electrokinetic flow in multilayer membranes.
Jun Yang +5 more
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Membrane potential oscillations underlying firing patterns in neocortical neurons
Neuroscience, 1994Membrane potential oscillations were studied in slices of rat somatosensory cortex maintained in vitro, using intracellular recordings from cells in layers 2/3 and 5. The cells were classified according to their firing patterns during long (0.8-1 s) depolarizing current steps. Subthreshold voltage oscillations were revealed by depolarizing the membrane
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Membrane potential oscillations in homokaryons
Experimental Cell Research, 1982Dieter F. Hülser, Ursula Lauterwasser
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