Electrical responses recorded from nerve, muscle, SENSORY RECEPTOR, or area of the central nervous system following stimulation. They range from less than a microvolt to several microvolts. The evoked potential can be auditory (evoked potentials, auditory), somatosensory (evoked potentials, somatosensory), visual (evoked potentials, visual), or motor (evoked potentials, motor), or other modalities that have been reported.