Optic ataxia errors depend on remapped, not viewed, target location

Optic ataxia errors depend on remapped, not viewed, target location

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'. H...

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Veröffentlicht in:Nature neuroscience 2005-04, Vol.8 (4), p.418-420
Hauptverfasser: Rossetti, Y, Khan, A Z, Pisella, L, Vighetto, A, Cotton, F, Luauté, J, Boisson, D, Salemme, R, Crawford, J D
Format: Artikel
Sprache:eng
Schlagworte:
Acoustics
Adult
Animal Genetics and Genomics
Ataxia
Ataxia - physiopathology
Behavioral Sciences
Bioengineering
Biological Techniques
Biomedical and Life Sciences
Biomedicine
Brain mapping
brief-communication
Care and treatment
Computer Science
Diagnosis
Electrooculography - methods
Engineering Sciences
Eye Movements - physiology
Functional Laterality - physiology
Humans
Image Processing
Imaging
Life Sciences
Male
Medical Imaging
Medical Physics
Neurobiology
Neurons and Cognition
Neurosciences
Nuclear medicine
Orientation
Parietal Lobe - injuries
Parietal Lobe - physiopathology
Physics
Psychomotor Performance - physiology
Saccades - physiology
Signal and Image processing
Task Performance and Analysis
Time Factors
Visual Fields - physiology
Visual Perception - physiology
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Beschreibung
Zusammenfassung: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.
ISSN:1097-6256
1546-1726
DOI:10.1038/nn1425