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Nat Neurosci. 2005 Apr;8(4):418-20. Epub 2005 Mar 13.

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

Author information

1
Espace et Action, Institut National de la Santé et de la Recherche Médicale, U534, Institut Fédératif des Neurosciences Lyon, 16 avenue Doyen Lépine, 69676, Bron, France.

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.

PMID:
15768034
DOI:
10.1038/nn1425
[Indexed for MEDLINE]

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