Electronystagmography (ENG)
The eyes are closely linked to the inner ear; these organs depend on each other for good balance and clear vision. Head movement or other stimulation of the inner ear sends signals to the muscles of the eyes via the nervous system; this is called the vestibulo-ocular reflex, or VOR.
The VOR normally generates eye movements that maintain clear vision with head movement. Electronystagmography (ENG) is a battery (group) of eye-movement tests that look for signs of vestibular dysfunction or neurological problems by measuring nystagmus (a type of involuntary eye movements). ENG tests are the most common ones administered to people with dizziness, vertigo, and/or balance disorders, although the test battery and some testing methods vary widely.
During ENG, eye movements are recorded and analyzed via small electrodes placed on the skin around the eyes. The electrodes attach to the skin with an adhesive, much like a small bandage. Alternatively, eye movements may be recorded by videonystagmography (VNG) using an infrared video camera mounted inside goggles that the patient wears instead of sticky-patch electrodes.
One ENG test evaluates the movement of the eyes as they follow a moving target. Another observes eye movements as the head is positioned in different directions. During the caloric test warm or cold water or air is circulated in the ear canal. The temperature change stimulates the inner ear in order to test the nystagmus response.
BPPV
Meniere's Disease
Endolymphatic Hydrops
Labyrinthitis/Vest Neuritis
Perilymph Fistula
Acoustic Neuroma
Ototoxicity
Vestibular Migraine
Mal de Debarquement
Pediatric Vest. Disorders
Aging & Dizziness
Cervicogenic Dizziness
Otosclerosis
Cholesteatoma
Enlarged Vest. Aqueduct
Vestibular Hyperacusis
Autoimmunity
Canal Dehiscence
Meniere's Disease
Endolymphatic Hydrops
Labyrinthitis/Vest Neuritis
Perilymph Fistula
Acoustic Neuroma
Ototoxicity
Vestibular Migraine
Mal de Debarquement
Pediatric Vest. Disorders
Aging & Dizziness
Cervicogenic Dizziness
Otosclerosis
Cholesteatoma
Enlarged Vest. Aqueduct
Vestibular Hyperacusis
Autoimmunity
Canal Dehiscence
Vestibular Disorders Association
VEDA
Recognizing the challenges of
inner ear disorders
inner ear disorders




