Daroff_Tape-3 Cerebellar Eye Signs

Identifier: Daroff_Tape-3 Title: Cerebellar Eye Signs Subject: Cerebellar; Eye Movement Disorders; Cerebellar Pathology Description: Lesions of the cerebellum can result in a variety of eye movement disorders, including saccadic intrusions and oscillations, such as ocular dysmetria, as well as nystagmus, gaze palsies, and dysfunction of the vestibular ocular reflex. In this series of videos, these disorders are discussed in relation to the relevant cerebellar and brainstem anatomy. Further, a more detailed look at both nystagmus and how saccades are initiated and maintained is provided, with mention of the cerebellum’s role in these eye movements. Specifically, the origin of the pulse-step firing from the burst cells and nucleus prepositus hypoglossi, which is necessary to produce a saccade, as well as the tonic inhibition of the burst cells’ firing by the pause cells are detailed. Ocular flutter, a disorder of the pause cells, is used to illustrate these cells’ clinical significance. This video is part of the Daroff Collection in NOVEL, the Neuro-Ophthalmology Virtual Education Library. Please cite the source when using this video. NOVEL.utah.edu Copyright 2010. For further information regarding the rights to this collection, please visit http://library.med.utah.edu/NOVEL/about/copyright