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  Virtual arm's reach influences perceived distances but only after experience reaching

Linkenauger, S., Bülthoff, H., & Mohler, B. (2015). Virtual arm's reach influences perceived distances but only after experience reaching. Neuropsychologia, 70, 393-401. doi:10.1016/j.neuropsychologia.2014.10.034.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-46A8-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-1CE0-3
Genre: Journal Article

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Linkenauger, SA, Author              
Bülthoff, HH1, 2, Author              
Mohler, BJ2, 3, Author              
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              
3Research Group Space and Body Perception, Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_2528693              

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 Abstract: Considerable empirical evidence has shown influences of the action capabilities of the body on the perception of sizes and distances. Generally, as one׳s action capabilities increase, the perception of the relevant distance (over which the action is to be performed) decreases and vice versa. As a consequence, it has been proposed that the body׳s action capabilities act as a perceptual ruler, which is used to measure perceived sizes and distances. In this set of studies, we investigated this hypothesis by assessing the influence of arm׳s reach on the perception of distance. By providing participant with a self-representing avatar seen in a first-person perspective in virtual reality, we were able to introduce novel and completely unfamiliar alterations in the virtual arm׳s reach to evaluate their impact on perceived distance. Using both action-based and visual matching measures, we found that virtual arm׳s reach influenced perceived distance in virtual environments. Due to the participants׳ inexperience with the reach alterations, we also were able to assess the amount of experience with the new arm׳s reach required to influence perceived distance. We found that minimal experience reaching with the virtual arm can influence perceived distance. However, some reaching experience is required. Merely having a long or short virtual arm, even one that is synchronized to one׳s movements, is not enough to influence distance perception if one has no experience reaching.

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 Dates: 2015-04
 Publication Status: Published in print
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 Identifiers: DOI: 10.1016/j.neuropsychologia.2014.10.034
BibTex Citekey: LinkenaugerBM2014
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Title: Neuropsychologia
Source Genre: Journal
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Pages: - Volume / Issue: 70 Sequence Number: - Start / End Page: 393 - 401 Identifier: -