RT Journal Article
SR Electronic
T1 “Saccadic nystagmus” in cerebellar cortical atrophy
JF Neurology
JO Neurology
FD Lippincott Williams & Wilkins
SP 676
OP 676
DO 10.1212/WNL.25.7.676
VO 25
IS 7
A1 ALPERT, J. N.
A1 COATS, A. C.
A1 PERUSQUIA, E.
YR 1975
UL http://n.neurology.org/content/25/7/676.abstract
AB An ocular dyskinesia designated "saccadic nystagmus" was observed in a patient with cerebellar cortical atrophy. Saccadic nystagmus is a sustained ocular dyskinesia present during visual fixation and abolished by eye closure. It is difficult to distinguish visually from either pendular or jerk nystagmus without eye movement recordings. The oscillations are horizontal and rapid and may be influenced by direction of gaze. Caloric nystagmus (eyes closed) and optokinetic nystagmus were normal in our patient. Visual fixation abolished caloric nystagmus, which was replaced by saccadic nystagmus.