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  Grasping visual illusions: No evidence for a dissociation between perception and action

Franz, V., Gegenfurtner, K., Bülthoff, H., & Fahle, M.(1999). Grasping visual illusions: No evidence for a dissociation between perception and action (67). Tübingen, Germany: Max Planck Institute for Biological Cybernetics.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0013-E6E9-7 Versions-Permalink: https://hdl.handle.net/21.11116/0000-0005-1969-A
Genre: Bericht

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 Urheber:
Franz, V1, 2, Autor           
Gegenfurtner, K1, 2, Autor           
Bülthoff, HH1, 2, Autor           
Fahle, M, Autor           
Affiliations:
1Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              
2Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              

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 Zusammenfassung: Neuropsychological studies motivated the theory that the primate visual system might be organized into two parallel pathways, one for conscious perception and one to guide action (Milner Goodale, 1995). Supporting evidence in healthy humans seemed to come from a dissociation in visual illusions: Aglioti, DeSouza, and Goodale (1995) reported that the Ebbinghaus (or Titchener) Illusion deceived
perceptual judgments of size, but only marginally influenced the size estimates used in grasping. Here we show that identical effects of the illusion are found if the perceptual and grasping tasks are appropriately matched. We show that the differences found by Aglioti
et al. (1995) can be accounted for by a hitherto unknown, super additive effect in the illusion. We conclude that the illusion does not provide evidence for the existence of two distinct pathways for perception and action in the visual system.

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 Datum: 1999-02
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: Tübingen, Germany : Max Planck Institute for Biological Cybernetics
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: Reportnr.: 67
BibTex Citekey: 1535
 Art des Abschluß: -

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Titel: Technical Report of the Max Planck Institute for Biological Cybernetics
Genre der Quelle: Reihe
 Urheber:
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 67 Artikelnummer: - Start- / Endseite: - Identifikator: -