| visual evoked potential | Voltage fluctuations that may be recorded from the occipital area of the scalp as the result of retinal stimulation by a light flashing at 1/4-second intervals; commonly summated and averaged by computer. (05 Mar 2000) |
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| somatosensory evoked potential | The computer-averaged cortical and subcortical responses to repetitive stimulation of peripheral nerve sensory fibres. (05 Mar 2000) |
| evoked potential | An event-related potential, elicited by, and time-lockied to a stimulus. See: evoked response. (05 Mar 2000) |
| audiometer | <physics> An instrument by which the power of hearing can be gauged and recorded on a scale. Origin: L. Audire to hear. Source: Websters Dictionary (01 Mar 1998) |
| automatic audiometer | An audiometer that is operated by the patient, enabling him to control the intensity of the tone presented to him and thus track his own hearing thresholds. (05 Mar 2000) |
| Bekesy audiometer | An automatic audiometer in which the tone sweeps the audiometric scale while the patient controls intensity by pressing a button when he cannot hear the tone; may be operated either at a fixed frequency or at steadily changing frequencies. (05 Mar 2000) |
| pure-tone audiometer | An electroacoustical generator which produces pure tones of selected frequencies and calibrated output. (05 Mar 2000) |
| speech audiometer | An audiometer that provides spoken material at controlled sound pressure levels to obtain speech reception thresholds, tolerance for loud speech, and discrimination ability, utilizing either a live voice with a microphone or a recorded voice played over a turntable or tape recorder. (05 Mar 2000) |
| limited range audiometer | A pure-tone audiometer designed to test restricted ranges of frequency and sound pressure. (05 Mar 2000) |
| audiometry, evoked response | A form of electrophysiologic audiometry in which an analog computer is included in the circuit to average out ongoing or spontaneous brain wave activity. A characteristic pattern of response to a sound stimulus may then become evident. Evoked response audiometry is known also as electric response audiometry. (12 Dec 1998) |
| auditory evoked potentials | <investigation> A special neurologic test, known as brainstem auditory evoked potentials, which measures the brain and brainstem nervous response to auditory stimulation. A test used to evaluate neurologic integrity and hearing in newborns. Can be used in the evaluation of stroke, acoustic neuroma, Meniere's disease and multiple sclerosis (27 Sep 1997) |
| brainstem auditory evoked potentials | <investigation, physiology> A special neurologic test which measures the brainstem and brains nervous response to auditory stimulation. It is used to evaluate neurologic integrity and hearing in newborns. Can be used in the evaluation of stroke, acoustic neuroma, Meniere's disease and multiple sclerosis Acronym: BAEP (15 Nov 1997) |
| brainstem evoked response audiometry | An electrophysiologic measure of auditory function utilizing responses produced by the auditory nerve and the brainstem to repetitive acoustic stimuli. (05 Mar 2000) |
| evoked potentials | <physiology> The use of electrodes to measure the electrical activity of nerves. May be used as a guide during surgical removal of tumours growing around important nerves. (16 Dec 1997) |
| evoked potentials, auditory | The electric response evoked in the cerebral cortex by acoustic stimulation or stimulation of the auditory pathways. (12 Dec 1998) |