What happens at a Vestibular Evaluation?

Rotational Chair:  Rotary chair testing is a mid-frequency test of vestibular function, testing a range of different frequencies from 0.01 Hz to 0.64 Hz. Rotary chair (head) speed is compared to eye movement speed to assess the vestibulo-ocular reflex (VOR). Patients are tested with their eyes open without fixation.

Electrocochleography:   Electrocochleography is a test of the electrical activity generated by the cochlea and eighth nerve. It is most often used to aid in the diagnosis of Ménière disease, but it can also be used for intraoperative monitoring of the cochlear and eighth nerve.

VEMP:   VEMP is a relatively new vestibular function test performed by stimulating one ear with repetitive pulse or click sound stimulation and then measuring surface EMG responses over selected muscles averaging the reaction of the muscle electrical activity associated with each sound click or pulse.

Calorics:   Caloric stimulation is a test that uses differences in temperature to diagnose damage to the acoustic nerve. This is the nerve that is involved in hearing and balance. The test also checks for damage to the brain stem.

Oculomotor:  Consists of Saccades, Pendular, & Optikinetic testing. Examples of these tests include Smooth Pursuit, Tracking, Gaze, High Frequency Head Shake, Positionals, Vertebral Artery Screening Test, Dix-Hallpike, etc.