1. Acetylcholine produced end-plate current (e.p.c.) noise is shown to be the results of statistical fluctuations in the ionic conductance of voltage clamped end-plates of Rana pipiens.2. These e.p.c. fluctuations are characterized by their e.p.c. spectra which conform to a relation predicted from a simple model of end-plate channel gating behaviour.3. The rate constant of channel closing alpha...

abstract: one the most important problems in recent sensitive loads is the quality of voltage. for this challenge custom power devices are used in distribution systems. dynamic voltage restorer (dvr) is a custom power device that improves voltage, decrease power distortion, filter harmonics and balance distributed generations (dgs) with low voltage distribution system. in this paper, a new algo...

The Ca2+ current activated upon hyperpolarization of Paramecium tetraurelia decays over a period of 150-200 ms during sustained steps under voltage clamp. At membrane potentials between -70 and approximately -100 mV, the time course of this inactivation is described by a single exponential function. Steps negative to approximately -100 mV elicit currents that decay biexponentially, however. Thr...

Noise-delayed decay occurs when the first-spike latency of a periodically forced neuron exhibits a maximum at particular noise intensity. Here we investigate this phenomenon at the network level, in particular by considering scale-free neuronal networks, and under the realistic assumption of noise being due to the stochastic nature of voltage-gated ion channels that are embedded in the neuronal...

K contractures and two-microelectrode voltage-clamp techniques were used to measure inactivation of excitation-contraction coupling in small bundles of fibers from rat extensor digitorum longus (e.d.l.) and soleus muscles at 21 degrees C. The rate of spontaneous relaxation was faster in e.d.l. fibers: the time for 120 mM K contractures to decay to 50% of maximum tension was 9.8 +/- 0.5 s (mean ...

We theoretically investigate the phase and voltage correlation dynamics, which includes both deterministic contribution stochastic fluctuations, under a current noise generated by resistor including thermal quantum fluctuations in resistively capacitively shunted Josephson junction. An external is found to shift intensify contributions voltage. In addition effects of current, we observe relaxat...

In the experiments here, the detailed kinetic properties of the Ca~+-independent, depolarization-activated outward currents (lout) in enzymatically dispersed adult rat atrial myocytes were studied. Although there is only slight attenuation of peak/out during brief (100 ms) voltage steps, substantial decay is evident during long (10 s) depolarizations. The analyses here reveal that current inact...

The emergence of anionic redox reactions in layered transition metal oxide cathodes provides practical opportunity to boost the energy density rechargeable batteries. However, activation reaction oxides has significant voltage hysteresis and decay that reduce battery performance limit commercialization. Here, we critically review up-to-date development cathodes, summarize proposed mechanism, un...