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Evoked potential

In neuropysiology, an evoked potential is any change in the voltages of a subject's scalp induced by a change in their sensory input.
The scalp voltages are typically measured in microvolts by an electroencephalagraph[?] (EEG) machine.
Evoked potentials are usually done on one sensory mode at a time. Visual evoked potentials may be induced by a flashing light, auditory evoked potentials by the onset of a sound, and somatosensory evoked potentials by a solenoid pulsing against a person's skin.
See also: Evoked Response Potentials[?], Steady-State Evoked Potentials[?], Visual Evoked Potentials[?], Auditory Evoked Potentials[?], Somatosensory Evoked Potentials[?].

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