evoked potential (EP) studies, an electrodiagnostic test indicated for patients with suspected sensory deficit who are unable to indicate or unreliable in indicating stimulus recognition. Evoked potential studies are used to evaluate areas of the cortex that receive incoming stimulus from the eyes, ears, and lower/upper extremity sensory nerves; to monitor natural progression or treatment of deteriorating neurological diseases; and to identify histrionic or malingering patients with sensory deficit complaints. These studies include visual evoked responses, auditory brainstem evoked potentials, and somatosensory evoked responses.
