Video-or Electro-Nystagmography (VNG/ENG)
Assesses visual and vestibular control of eye movements. Our VNG/ENG
is an improved and state-of-the-art version of traditional
physiologic testing of these systems, and can include caloric
testing, saccades, pursuit, optokinetic nystagmus, head shake,
and dynamic visual acuity.
Vestibular Evoked Myopotentials (VEMP)
Tests the sacculus and inferior branch of the vestibular nerve using
a series of clicks applied to the ear while monitoring
sternocledomastoid or orbicularis activity. This test is
especially useful when an inner ear fistula or superior
canal dehiscence is suspected.
There are tests available when specific clinical
conditions are suspected—for instance, documenting eye
movement in response to sound or pressure changes for
patients with superior semicircular canal dehiscence
syndrome, measuring dynamic visual acuity in patients
with oscillopsia, or measuring vestibulo-ocular reflex gain
in subjects with suspected bilateral vestibular loss. Dr. Crane
has a laboratory which is developing perceptual tests human
vestibular function which may be available. Because we
always have a trained physician on-site when testing is
performed, patients who would benefit from these tests can
be identified and get this testing done in the same session.
Tests will be interpreted by our director, Dr. Benjamin Crane, and a written report will be returned to you within a couple of days.