depolarization potential

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• Depolarization-induced suppression of inhibition — (DSI) is the classical and original electrophysiological example of endocannabinoid function in the central nervous system. Prior to the demonstration that DSI was dependent on the cannabinoid CB1 receptor function, there was no way of producing… …   Wikipedia

• Depolarization (disambiguation) — Depolarization or depolarizer may refer to: Depolarization, a decrease in the absolute value of a cell s membrane potential Depolarizer, a substance used to depolarize an electrochemical cell Depolarization ratio, the intensity ratio between the… …   Wikipedia

• Depolarization — For other uses, see Depolarization (disambiguation). Neuroscience portal In biology, depolarization is a change in a cell s membrane potential, making it more positive, or less negative. In neurons and some other cells, a large enough… …   Wikipedia

• potential — 1. Capable of doing or being, although not yet doing or being; possible, but not actual. 2. A state of tension in an electric source enabling it to do work under suitable conditions; in relation to electricity, p. is analogous to the temperature… …   Medical dictionary

• depolarization — 1. A relative reduction in magnitude of polarization; in nerve cells, d. may result from an increase in the permeability of the cell membrane to sodium ions. 2. The destruction, neutralization, or change in direction of …   Medical dictionary

• depolarization — n. the sudden surge of charged particles across the membrane of a nerve cell or a muscle cell that accompanies a physicochemical change in the membrane and cancels out, or reverses, its resting potential to produce an action potential. The… …   The new mediacal dictionary

• depolarization — A positive shift in a cell s resting potential (that is normally negative), thus making it numerically smaller and less polarized, eg. 90mV to 50mV. The opposite of hyperpolarization …   Dictionary of molecular biology

• end plate potential — Depolarization of the sarcolemma as a result of acetylcholine release from the motoneuron causing an influx of sodium ions. The end plate potential is the sum of quantal miniature end plate potentials. Development of the end plate potential is… …   Dictionary of molecular biology

• Action potential — In physiology, an action potential is a short lasting event in which the electrical membrane potential of a cell rapidly rises and falls, following a consistent trajectory. Action potentials occur in several types of animal cells, called… …   Wikipedia

• End-plate potential — Miniature end plate potentials and end plate spikes recorded from muscle fiber End plate potentials (EPPs) (sometimes called end plate spikes ) are the depolarizations of skeletal muscle fibers caused by neurotransmitters binding to the… …   Wikipedia

• Cardiac action potential — The cardiac action potential is a specialized action potential in the heart, with unique properties necessary for function of the electrical conduction system of the heart.The cardiac action potential differs significantly in different portions… …   Wikipedia