Spike Potential

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Potential, Spike

a large and sudden change in electrical potential that accompanies excitation in nerve and muscle cells and fibers. In physiology, the term “spike potential” is often used as a synonym for action potential. In clinical electroencephalography spike potential refers to gross potentials reaching 10 milliseconds in duration that are outwardly similar to the action potential of a nerve. These potentials are detected in an electrocorticogram taken with certain pathological disturbances, particularly epilepsy.

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