Abstract
Optic ataxia is a disorder associated with posterior parietal lobe lesions, in which visually guided reaching errors typically occur for peripheral targets. It has been assumed that these errors are related to a faulty sensorimotor transformation of inputs from the 'ataxic visual field'. However, we show here that the errors observed in the contralesional field in optic ataxia depend on a dynamic gaze-centered internal representation of reach space.
Publication types
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Comparative Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Adult
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Ataxia / physiopathology*
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Electrooculography / methods
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Eye Movements / physiology
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Functional Laterality / physiology
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Humans
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Male
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Orientation
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Parietal Lobe / injuries
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Parietal Lobe / physiopathology*
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Psychomotor Performance / physiology*
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Saccades / physiology
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Task Performance and Analysis
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Time Factors
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Visual Fields / physiology
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Visual Perception / physiology*