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Ocular Motor Disorders and the Cerebellum

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1.  The nodulus and uvula are part of what cerebellar structure? Frontal lobe Spinocerebellum Vestibulocerebellum Pons

2.  The flocculus receives projections from the: Vestibular nucleus Frontal lobe Hind brain Auditory cortex

3.  Which is not part of the ocular motor vermis? Tuber Folium Declive Organ of Corti

4.  Which is a key ocular motor abnormality in patients with impairments in the Oculomotor Vermis? Downbeat nystagmus Impaired VOR cancellation Hypermetric contraversive saccades Periodic alternating nystagmus (PAN)

5.  The fastigial Nucleus receives projections from the: Flocculus Paramedian pontine reticular formation Cochlear nucleus Dorsal vermis

6.  Which is a key ocular motor abnormality in patients with impairments in the Fastigial Nucleus? Unilateral caloric weakness Hypermetric saccades Bilaterally reduced vestibular evoked myogenic potentials Head-shaking nystagmus

7.  Periodic alternation nystagmus is observed in impairments in the: Middle cerebellar peduncle Paraflocculus Nodulus None of the above

8.  Impairments in the dorsal vermis most often are associated with abnormalities in: Translational vestibulo-ocular reflex Hearing thresholds Saccadic accuracy Gaze-holding

9.  Abnormal time constants during rotational testing may be suspected in patients with an impairment in the: Spiral ganglion Ocular motor vermis Fastigial Nucleus Nodulus or uvula

10.  Impaired smooth pursuit and vestibulo-ocular reflex cancellation are most commonly associated with impairments in: Flocculus Ocular motor vermis Fastigial Nucleus Nodulus or uvula