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  The effect of visual illusions on perception and visually guided movements

Fahle, M., & Franz, V. (2000). The effect of visual illusions on perception and visually guided movements. Poster presented at XXVII. International Congress of Psychology (ICIP 2000), Stockholm, Sweden.

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Fahle, M1, Author              
Franz, VH1, Author              
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1External Organizations, ou_persistent22              

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 Abstract: Several reports in the literature indicate that visual size illusions may not have an influence on visually guided hand movements, i.e. that movement planning may not be subject to the illusion, implying that there exist two at least partly separated systems. One of these should deal with "pure" perception, the other one with "perception for action". We tested the effect of the Ebbinghaus size illusion on both perception and grasping. An "isolated" form of the illusion (either a large circle among small circles OR vice versa) produced virtually identical results for grasping and perception, while a "simultaneous" version had a larger influence on perception than on grasping. The results cast some doubts on conventional ways to demonstrate the separation of pathways in normal subjects.

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 Dates: 2000-07
 Publication Status: Published in print
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.1080/00207594.2000.20000727
BibTex Citekey: 1342
 Degree: -

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Title: XXVII. International Congress of Psychology (ICIP 2000)
Place of Event: Stockholm, Sweden
Start-/End Date: 2000-07-23 - 2000-07-28

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Title: International Journal of Psychology
  Other : Int. J. Psychol.
Source Genre: Journal
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Publ. Info: Paris : Dunod
Pages: - Volume / Issue: 35 (3-4) Sequence Number: 40309.01 Start / End Page: 283 Identifier: ISSN: 0020-7594
CoNE: https://pure.mpg.de/cone/journals/resource/954925254127