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  The Importance of Vestibular and Proprioceptive Signals on Perspective‐Taking

Pavlidou, A. (2018). The Importance of Vestibular and Proprioceptive Signals on Perspective‐Taking. Talk presented at Dagstuhl Seminar 18212: On-Body Interaction: Embodied Cognition Meets Sensor/Actuator Engineering to Design New Interfaces. Schloss Dagstuhl, Germany. 2018-05-21 - 2018-05-24.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-42A5-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-42BA-1
Genre: Talk

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Pavlidou, A1, 2, 3, Author              
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1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Project group: Social & Spatial Cognition, Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_2528706              
3Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: The ability to adopt the visuo-spatial perspective of others is fundamental for successful social interactions. Here, we measured how vestibular (Experiment 1) and proprioceptive (Experiment 2) signals influence perspective-taking abilities. For each experiment, participants completed the “dot-counting task”: they evaluated if a number (0-3) presented at the start of each trial matched or mismatched the number of balls visible from their perspective in a visual scene of a 3D virtual room that followed. A task-irrelevant human avatar or arrow was also present in the center of the room that either shared the same or different viewpoint as the participant’s. This allowed us to examine the likelihood that participants would implicitly adopt the perspective of the object even though they were not required to. In Experiment 1, participants performed the task while they received low-intensity (1mA) galvanic vestibular stimulation (GVS). Analysis of reaction times between same and different viewpoints revealed that GVS reduced the likelihood that participants implicitly adopted the avatar’s perspective, promoting an egocentric viewpoint. In Experiment 2, we manipulated the congruency between the participant’s body orientation (e.g. their entire body was facing the right side of the screen) and that of the avatar. When participants and avatars shared the same body orientation, participants were more likely to implicitly adopt the avatar’s perspective, resulting in longer response times in the dot-counting task. For both experiments, the effects were not observed for the arrow. Altogether, the results indicate that implicit simulation of another person’s viewpoint requires vestibular and proprioceptive signals.

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 Dates: 2018-05
 Publication Status: Published in print
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Title: Dagstuhl Seminar 18212: On-Body Interaction: Embodied Cognition Meets Sensor/Actuator Engineering to Design New Interfaces
Place of Event: Schloss Dagstuhl, Germany
Start-/End Date: 2018-05-21 - 2018-05-24
Invited: Yes

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Title: Dagstuhl Reports
Source Genre: Journal
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Publ. Info: Wadern, Germany : Schloss Dagstuhl, Leibniz-Zentrum für Informatik
Pages: - Volume / Issue: 8 (5) Sequence Number: 3.13 Start / End Page: 93 - 94 Identifier: ISSN: 2192-5283
CoNE: https://pure.mpg.de/cone/journals/resource/21925283