After a Hand Was Lent: Sporadically Experiencing Multisensory Interference During the Rubber Hand Illusion Does Not Shield Against Disembodiment

Observations from multisensory body illusions indicate that the body representation can be adapted to changing task demands, e.g., it can be expanded to integrate external objects based on current sensorimotor experience (embodiment). While the mechanisms that promote embodiment have been studied ex...

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Main Authors: Julia Eck, David Dignath, Andreas Kalckert, Roland Pfister
Format: Article
Language:English
Published: Ubiquity Press 2025-01-01
Series:Journal of Cognition
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Online Access:https://account.journalofcognition.org/index.php/up-j-jc/article/view/427
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author Julia Eck
David Dignath
Andreas Kalckert
Roland Pfister
author_facet Julia Eck
David Dignath
Andreas Kalckert
Roland Pfister
author_sort Julia Eck
collection DOAJ
description Observations from multisensory body illusions indicate that the body representation can be adapted to changing task demands, e.g., it can be expanded to integrate external objects based on current sensorimotor experience (embodiment). While the mechanisms that promote embodiment have been studied extensively in earlier work, the opposite phenomenon of, removing an embodied entity from the body representation (i.e., disembodiment) has received little attention yet. The current study addressed this phenomenon and drew inspiration from the partial reinforcement extinction effect in instrumental learning which suggests that behavior is more resistant to extinction when reinforcement is delivered irregularly. In analogy to this, we investigated whether experiencing occasional visuo-motor mismatches during the induction phase of the moving rubber hand illusion (intermittent condition) would result in slower disembodiment as compared to a regular induction phase where motor and visual signals always match (continuous condition). However, we did not find an effect of reinforcement schedule on disembodiment. Keeping a recently embodied entity in the body schema, therefore, requires constant updating through correlated perceptual and motor signals.
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institution Kabale University
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publishDate 2025-01-01
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spelling doaj-art-42b4d16f157641cf909270d87b1245cb2025-02-11T05:36:32ZengUbiquity PressJournal of Cognition2514-48202025-01-0181181810.5334/joc.427426After a Hand Was Lent: Sporadically Experiencing Multisensory Interference During the Rubber Hand Illusion Does Not Shield Against DisembodimentJulia Eck0https://orcid.org/0000-0001-5662-3918David Dignath1Andreas Kalckert2https://orcid.org/0000-0003-2498-9135Roland Pfister3https://orcid.org/0000-0002-4429-1052Department of Psychology III, University of WürzburgDepartment of Psychology, Eberhard Karls University of TübingenCognitive neuroscience and philosophy, University of SkövdeGeneral Psychology, Trier University; Institute for Cognitive and Affective Neuroscience (ICAN), Trier UniversityObservations from multisensory body illusions indicate that the body representation can be adapted to changing task demands, e.g., it can be expanded to integrate external objects based on current sensorimotor experience (embodiment). While the mechanisms that promote embodiment have been studied extensively in earlier work, the opposite phenomenon of, removing an embodied entity from the body representation (i.e., disembodiment) has received little attention yet. The current study addressed this phenomenon and drew inspiration from the partial reinforcement extinction effect in instrumental learning which suggests that behavior is more resistant to extinction when reinforcement is delivered irregularly. In analogy to this, we investigated whether experiencing occasional visuo-motor mismatches during the induction phase of the moving rubber hand illusion (intermittent condition) would result in slower disembodiment as compared to a regular induction phase where motor and visual signals always match (continuous condition). However, we did not find an effect of reinforcement schedule on disembodiment. Keeping a recently embodied entity in the body schema, therefore, requires constant updating through correlated perceptual and motor signals.https://account.journalofcognition.org/index.php/up-j-jc/article/view/427action and perceptionmultisensory perceptionlearning
spellingShingle Julia Eck
David Dignath
Andreas Kalckert
Roland Pfister
After a Hand Was Lent: Sporadically Experiencing Multisensory Interference During the Rubber Hand Illusion Does Not Shield Against Disembodiment
Journal of Cognition
action and perception
multisensory perception
learning
title After a Hand Was Lent: Sporadically Experiencing Multisensory Interference During the Rubber Hand Illusion Does Not Shield Against Disembodiment
title_full After a Hand Was Lent: Sporadically Experiencing Multisensory Interference During the Rubber Hand Illusion Does Not Shield Against Disembodiment
title_fullStr After a Hand Was Lent: Sporadically Experiencing Multisensory Interference During the Rubber Hand Illusion Does Not Shield Against Disembodiment
title_full_unstemmed After a Hand Was Lent: Sporadically Experiencing Multisensory Interference During the Rubber Hand Illusion Does Not Shield Against Disembodiment
title_short After a Hand Was Lent: Sporadically Experiencing Multisensory Interference During the Rubber Hand Illusion Does Not Shield Against Disembodiment
title_sort after a hand was lent sporadically experiencing multisensory interference during the rubber hand illusion does not shield against disembodiment
topic action and perception
multisensory perception
learning
url https://account.journalofcognition.org/index.php/up-j-jc/article/view/427
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