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An allocentric rather than perceptual deficit in patient D.F.


The perception/action model states that vision for perception and vision for action are processed in separate pathways. This model was inspired by observations in patient D.F. who seemed unable to use vision for perceptual tasks while retaining 'normal' visuomotor capacity. I found that D.F.'s performance is preserved in perceptual and visuomotor tasks when the required spatial information is hand-centered and impaired when the information is object-centered.

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Figure 1: Illustration of the four tasks, and group results.
Figure 2: Illustration of individual results.


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I thank D.F. for her participation. This work was supported by the Wolfson Research Institute and a grant from the Leverhulme Trust (grant F/00128/O).

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Correspondence to Thomas Schenk.

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The author declares no competing financial interests.

Supplementary information

Supplementary Table 1

Proprioceptive performance of patient DF and controls. (PDF 11 kb)

Supplementary Note (PDF 108 kb)

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Schenk, T. An allocentric rather than perceptual deficit in patient D.F.. Nat Neurosci 9, 1369–1370 (2006).

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