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Tests of Otolith Function

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1.  In an upright static position, normal individuals align the linear marker within ____ degrees of true (gravitational) vertical (0 degrees). 2 4 6 10

2.  Unilateral centrifugation (off-axis rotation) may provide a clinical test of _________ function. posterior semicircular canal horizontal semicircular canal saccular utricular

3.  Following vestibular nerve section, the static SVV shifts with the upper pole of the light bar ______________. toward the lesioned side away from the lesioned side at true gravitational vertical (0 degrees) in either direction

4.  During constant velocity off-axis rotation of individuals with normal vestibular function the utricle positioned on-axis is stimulated the non-test ear is exposed to greater GIF the test ear is exposed to lesser GIF the utricle positioned off-axis is stimulated

5.  During constant velocity off-axis rotation, individuals with unilateral vestibular loss: exhibit an SVV symmetry do not shift the SVV when the lesioned ear is centrifuged shift the SVV only when the lesioned ear is centrifuged do not shift the SVV when the unaffected ear is centrifuged

6.  The cervical vestibular evoked myogenic potential (cVEMP) is recorded from the splenius muscle the sternocleidomastoid muscle the mastoid process the post-auricular muscle

7.  While the patient is looking up, the largest amplitude ocular vestibular evoked myogenic potential (oVEMP) is recorded from electrodes located above the eyes on the outer canthus below the eyes on the sternocleidomastoid muscle

8.  The ocular vestibular evoked myogenic potential (oVEMP) is an ipsilateral response a contralateral response a bilateral, but predominantly ipsilateral response a bilateral, but predominantly contralateral response

9.  The most common cVEMP response abnormalities in vestibular-related disorders are delayed absolute latencies delayed interpeak latencies interaural amplitude differences and absent responses elevated thresholds

10.  Vestibular evoked myogenic potentials provide diagnostic information concerning horizontal canal function otolith function posterior canal function angular vestibulo-ocular reflex