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Hypometric saccades and low‐gain pursuit resulting from a thalamic hemorrhage
Author(s) -
Brigell Mitchell,
Babikian Viken,
Goodwin James A.
Publication year - 1984
Publication title -
annals of neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.764
H-Index - 296
eISSN - 1531-8249
pISSN - 0364-5134
DOI - 10.1002/ana.410150412
Subject(s) - saccadic masking , eye movement , neuroscience , smooth pursuit , lesion , medicine , efferent , gaze , psychology , physical medicine and rehabilitation , surgery , afferent , psychoanalysis
Saccadic and pursuit eye movements were measured in a patient with a right thalamic hemorrhage using an infrared reflection technique. Saccades were hypometric when directed away from the side of the lesion, and pursuit was low in gain, with many interposed saccades, when directed toward the side of the lesion. This eye movement pattern is similar to that observed in hemidecorticate patients. We postulate that the ocular abnormalities observed in our patients were secondary to an interruption of the efferent pathways from the right cerebral areas mediating saccadic and smoothpursuit eye movements.