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Open AccessArticle

Hands Ahead in Mind and Motion: Active Inference in Peripersonal Hand Space

Cognitive Modeling, Department of Computer Science, Faculty of Science, University of Tübingen, 72076 Tübingen, Germany
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Vision 2019, 3(2), 15; https://doi.org/10.3390/vision3020015
Received: 28 February 2019 / Revised: 5 April 2019 / Accepted: 16 April 2019 / Published: 18 April 2019
(This article belongs to the Special Issue Visual Control of Action)
According to theories of anticipatory behavior control, actions are initiated by predicting their sensory outcomes. From the perspective of event-predictive cognition and active inference, predictive processes activate currently desired events and event boundaries, as well as the expected sensorimotor mappings necessary to realize them, dependent on the involved predicted uncertainties before actual motor control unfolds. Accordingly, we asked whether peripersonal hand space is remapped in an uncertainty anticipating manner while grasping and placing bottles in a virtual reality (VR) setup. To investigate, we combined the crossmodal congruency paradigm with virtual object interactions in two experiments. As expected, an anticipatory crossmodal congruency effect (aCCE) at the future finger position on the bottle was detected. Moreover, a manipulation of the visuo-motor mapping of the participants’ virtual hand while approaching the bottle selectively reduced the aCCE at movement onset. Our results support theories of event-predictive, anticipatory behavior control and active inference, showing that expected uncertainties in movement control indeed influence anticipatory stimulus processing. View Full-Text
Keywords: event-predictive cognition; crossmodal congruency; peripersonal space; virtual reality event-predictive cognition; crossmodal congruency; peripersonal space; virtual reality
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Lohmann, J.; Belardinelli, A.; Butz, M.V. Hands Ahead in Mind and Motion: Active Inference in Peripersonal Hand Space. Vision 2019, 3, 15.

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