Home > Specialties > Recorders, Physiologic, Evoked Potential, Visual

Recorders, Physiologic, Evoked Potential, Visual

Definition : Evoked potential (EP) physiologic recorders designed for detecting, amplifying and recording the brain's bioelectric response to visual external stimuli. These recorders typically consist of detachable electrodes usually placed on the scalp (to pick up potentials originated in the cerebral cortex); signal amplifiers; filters (to suppress interference); memory (e.g., electronic, optical/magnetic disc); and a display. Visual EP recorders usually include capabilities to deliver external stimuli (e.g., color reversible checkerboard patterns, flashlights) at an appropriate repetitive level to elicit the bioelectric response needed for recording. Visual EP recorders are mainly used in studies intended to diagnose ophthalmic diseases, usually by measuring the absence, attenuation, or increase in the time response (i.e., latency) of the peak response after the stimulus is applied. Recorders with additional capabilities to perform specialized forms of visual EP responses (i.e., electrooculography and electroretinography) are available; independent recorders intended only for these purposes are also available.

Entry Terms : "Visual Evoked-Potential Recorders" , "Recorders, Graphic, Evoked Potential, Visual" , "Visual Evoked-Potential Units"

UMDC code : 18334

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1-7 of 7 Match(es).

Cadwell Industries Inc

Company Type: Parent

Cadwell recently debuted the Easy Ambulatory EEG and PSG system with the NEW patent pending Q-Video Mobile recording system – This new video recording system synchronizes video with ambulatory EEG and PSG recordings collected outside of the hospital. Patients can move freely while the Easy system hardware captures multiple EEG and PSG channels with time synchronized video to assist physicians in identifying events.

Diagnosys LLC

Company Type: Parent

Diagnosys LLC is the technology leader in the field of ophthalmic electrophysiology. Offering a complete range of ERG, PERG, mfERG, EOG, flash and patttern VEP stimulator options recognized for superior engineering and performance, the Diagnosys Espion suite remains the system of choice for clinical, clinical trials, and advanced research applications.

Diopsys Inc

Company Type: Parent

Diopsys, Inc. is a leading provider of non-invasive medical devices that test for visual disorders that may affect the entire visual pathway.

LKC Technologies Inc

Company Type: Parent

LKC Technologies, Inc. is the worldwide leader in the visual electrophysiology field with products in over forty countries. Our products are used to diagnose a large number of ophthalmic conditions by measuring evoked potentials, including ERG, EOG, and VEP, dark adaptometry and more.

Med-Acoustics

Company Type: Parent

Natus Medical Inc

Company Type: Parent

Natus is a leading provider of healthcare products used for the screening, detection, treatment, monitoring and tracking of common medical ailments in newborn care, hearing impairment, neurological dysfunction, epilepsy, sleep disorders, and balance and mobility disorders.

Noraxon USA Inc

Company Type: Parent

As muscles contract, microvolt level electrical signals are created within the muscle that may be measured from the surface of the body. A procedure that measures muscle activity from the skin is referred to as surface electromyography (SEMG).

1-7 of 7 Match(es).