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  Grasping isoluminant stimuli

Kleinholdermann, U., Franz, V., Gegenfurtner, K., & Stockmeier, K. (2009). Grasping isoluminant stimuli. Experimental Brain Research, 197(1), 15-22. doi:10.1007/s00221-009-1841-2.

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Kleinholdermann, U, Author           
Franz, VH, Author           
Gegenfurtner, KR, Author           
Stockmeier, K1, 2, Author           
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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 Abstract: We used a virtual reality setup to let participants grasp discs, which differed in luminance, chromaticity and size. Current theories on perception and action propose a division of labor in the brain into a color proficient perception pathway and a less color-capable action pathway. In this study, we addressed the question whether isoluminant stimuli, which provide only a chromatic but no luminance contrast for action planning, are harder to grasp than stimuli providing luminance contrast or both kinds of contrast. Although we found that grasps of isoluminant stimuli had a slightly steeper slope relating the maximum grip aperture to disc size, all other measures of grip quality were unaffected. Overall, our results do not support the view that isoluminance of stimulus and background impedes the planning of a grasping movement.

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 Dates: 2009-07
 Publication Status: Published in print
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 Identifiers: DOI: 10.1007/s00221-009-1841-2
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Title: Experimental Brain Research
  Other : Exp. Brain Res.
Source Genre: Journal
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Publ. Info: Heidelberg : Springer-Verlag
Pages: - Volume / Issue: 197 (1) Sequence Number: - Start / End Page: 15 - 22 Identifier: ISSN: 0014-4819
CoNE: https://pure.mpg.de/cone/journals/resource/954925398496