Results 251 to 260 of about 511,878 (297)
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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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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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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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Subthreshold oscillations of the membrane potential: a functional synchronizing and timing device
Journal of Neurophysiology, 19931. Subthreshold membrane potential oscillations have been observed in different types of CNS neurons. In this in vitro study, we examined the possible role of these oscillations by analyzing the responses of neurons from the inferior olivary nucleus to a combined stimulation of sine wave and synaptic potentials. 2.
I, Lampl, Y, Yarom
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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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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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