The definitions appearing in this Glossary are provided solely for general informational purposes.
A brief, violent vertiginous episode occurring within seconds after a change in head position.
BPPV is the most common cause of episodic vertigo.
A sense of unsteadiness or imbalance typically exacerbated by movement or environmental
influences.
The recording of eye movements, either by electrodes worn around the eyes or through
infrared video oculography.
Recurrent vertigo, fluctuating sensory-neural hearing loss in one ear and tinnitus in the same
ear caused by increased pressure in the membranous labyrinth.
Involuntary back-and-forth or rotary movements of the eyeball. It is named for the fast
movement when fast and slow movements alternate.
Ear pain.
Ototoxicity refers to medication-caused auditory and/or vestibular system dysfunction
resulting in hearing loss or dysequilibrium.
Impairment of sensation in the extremitites frequently associated with circulatory diseases.
Pertaining to the awareness of touch and of body movement and position.
Ringing or other sounds in the ear, usually heard only by the affected person.
A sensation of rotating, either of oneself (subjective vertigo) or of one's surroundings
(objective vertigo).
Serves to maintain clear vision during head movement.
The recording of eye movements via infrared video.
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