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Influence of visual information on cerebellar saccadic dysmetria
Author(s) -
Gaymard B.,
Rivaud S.,
Amarenco P.,
PierrotDeseilligny C.
Publication year - 1994
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.410350117
Subject(s) - dysmetria , saccadic masking , neuroscience , cerebellum , psychology , medicine , eye movement
We compared the accuracy of saccades made to seen or remembered visual targets in 3 patients with saccadic dysmetria due to cerebellar lesions. Saccadic dysmetria was worse for saccades to remembered targets and for saccades to flashed targets visible for only 150 msec (i.e., invisible at the time of saccade). Furthermore, no corrective saccades were made if the target was not visible. These results have implications for testing saccadic dysmetria and suggest new hypotheses about the control of saccadic amplitude.