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Impairment of sequences of memory‐guided saccades after supplementary motor area lesions
Author(s) -
Gaymard B.,
PierrotDeseilligny Ch.,
Rivaud S.
Publication year - 1990
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.410280504
Subject(s) - eye movement , supplementary motor area , psychology , neuroscience , smooth pursuit , motor program , motor area , physical medicine and rehabilitation , audiology , medicine , functional magnetic resonance imaging
Different paradigms of saccades were recorded electro‐oculographically in 2 patients with infraction affecting the left supplementary motor area. Saccades made toward visual targets (visually‐guided saccades) or away from them (antisaccades) were normal in both patients. Memory‐guided saccades, made to the remembered position of a flash occurring 2 seconds before, were preserved in 1 patient and only slightly impaired in the other. However, sequences of two or three memory‐guided saccades were severely impaired in both patients. It has previously been reported that the supplementary motor area plays an important role in programming sequential limb movements. Our data suggest that this area plays a similar role in the control of sequential eye movements.