electronystagmography


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electronystagmography

 [e-lek″tro-nis″tag-mog´rah-fe]
graphic recordings of eye movements that provide objective documentation of induced and spontaneous nystagmus; see also electronystagmogram.

e·lec·tro·nys·tag·mog·ra·phy (ENG),

(ē-lek'trō-nis'tag-mog'ră-fē),
A method of nystagmography based on electrooculography; skin electrodes are placed at outer canthi to register horizontal nystagmus or above and below each eye for vertical nystagmus.
[electro- + nystagmus + G. graphō, to write]

electronystagmography

/elec·tro·nys·tag·mog·ra·phy/ (-nis″tag-mog´rah-fe) electroencephalographic recordings of eye movements that provide objective documentation of induced and spontaneous nystagmus.

electronystagmography

[ilek′trōnis′tagmog′rəfē]
Etymology: Gk, elektron + nystagmos, nodding, graphein, to record
a method of assessing and recording eye movements by measuring the electric activity of the extraocular muscles. See also electroencephalogram, nystagmus.

electronystagmography

Ophthalmology A battery of neurologic and neuro-otologic examinations that record eye movements, used to separate vestibular and oculomotor deficits of the CNS, from deficits of the peripheral vestibular system

e·lec·tro·nys·tag·mog·ra·phy

(ENG) (ĕ-lek'trō-nis-tag-mog'ră-fē)
A method of nystagmography based on electrooculography; skin electrodes are placed at outer canthi to register horizontal nystagmus, or above and below each eye for vertical nystagmus.
[electro- + nystagmus + G. graphō, to write]

electronystagmography

Graphical recording of the small electric currents generated by eye movements. These can be picked up by metal electrodes placed near the corners of the eyes, amplified and used to deflect recording pens so as to produce a permanent record of the eye movements. The method may be used to analyse abnormal rhythmical eye movement (NYSTAGMUS), or to record the response to CALORIC TESTS of the function of the inner ear balancing mechanism.

Electronystagmography

A method for measuring the electricity generated by eye movements. Electrodes are placed on the skin around the eye and the individual is subjected to a variety of stimuli so that the quality of eye movements can be assessed.
Mentioned in: Dizziness

electronystagmography

electroencephalographic recordings of eye movements that provide objective documentation of induced and spontaneous nystagmus.
References in periodicals archive ?
The rotation test was delayed compared with electronystagmography in demonstrating a vestibular abnormality, and the rotation test findings remained abnormal even as the patient's symptoms abated.
Based on a minimal history of vestibular symptoms, the findings of a peripheral vestibular disorder on electronystagmography and no abnormal symmetry on sinusoidal vertical-axis rotation testing indicate a longstanding inner ear disorder.
While the tinnitus did not localize to one ear or one side of the head, three findings point to a predominantly right-sided lesion: speech discrimination in noise, the results of ABB electronystagmography, and the distortion-product otoacoustic emissions.
Electronystagmography (ENG) revealed a direction-changing positional nystagmus, a 35% reduced vestibular response (RVR) left on alternate binaural bithermal caloric testing, and a type 2 response that revealed the RVR left on simultaneous binaural bithermal testing (figure 1).
Conventional vestibular testing usually involves electronystagmography (ENG) and rotational chair testing.
The Vestibulology Clinic was devoted to electronystagmography as applied to case presentations.
The study population was made up of 69 patients who had received 3 drops of gentamicin 10 mg/ml three times daily; the duration of treatment was guided by objective data obtained from weekly electronystagmography and audiometry.
Electronystagmography revealed a brisk, direction-fixed, right-beating nystagmus that ranged from 8[degrees]/sec to 15[degrees]/sec, depending on the position.
When evaluating patients with vestibular symptoms by electronystagmography, the usual expectation is that the source of the vestibular symptoms is hypoactive caloric functioning of the vestibular labyrinth.