Hansford, Kirralise, Baker, Daniel Hart orcid.org/0000-0002-0161-443X, McKenzie, Kirsten J et al. (1 more author) (2024) Multisensory processing and proprioceptive plasticity during resizing illusions. Experimental Brain Research. pp. 451-462. ISSN 1432-1106
Abstract
Bodily resizing illusions typically use visual and/or tactile inputs to produce a vivid experience of one’s body changing size. Naturalistic auditory input (an input that reflects the natural sounds of a stimulus) has been used to increase illusory experience during the rubber hand illusion, whilst non-naturalistic auditory input can influence estimations of finger length. We aimed to use a non-naturalistic auditory input during a hand-based resizing illusion using augmented reality, to assess whether the addition of an auditory input would increase both subjective illusion strength and measures of performance-based tasks. Forty-four participants completed the following three conditions: no finger stretching, finger stretching without tactile feedback and finger stretching with tactile feedback. Half of the participants had an auditory input throughout all the conditions, whilst the other half did not. After each condition, the participants were given one of the following three performance tasks: stimulated (right) hand dot touch task, non-stimulated (left) hand dot touch task, and a ruler judgement task. Dot tasks involved participants reaching for the location of a virtual dot, whereas the ruler task concerned estimates of the participant’s own finger on a ruler whilst the hand was hidden from view. After all trials, the participants completed a questionnaire capturing subjective illusion strength. The addition of auditory input increased subjective illusion strength for manipulations without tactile feedback but not those with tactile feedback. No facilitatory effects of audio were found for any performance task. We conclude that adding auditory input to illusory finger stretching increased subjective illusory experience in the absence of tactile feedback but did not affect performance-based measures.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Author(s) 2023 |
Keywords: | multisensory processing,resizing illusions,proprioceptive plasticity,audition |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Psychology (York) |
Funding Information: | Funder Grant number BBSRC (BIOTECHNOLOGY AND BIOLOGICAL SCIENCES RESEARCH COUNCIL) BB/V007580/1 |
Depositing User: | Pure (York) |
Date Deposited: | 26 Jan 2024 10:50 |
Last Modified: | 02 Nov 2024 01:26 |
Published Version: | https://doi.org/10.1007/s00221-023-06759-7 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1007/s00221-023-06759-7 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:208319 |
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Description: Multisensory processing and proprioceptive plasticity during resizing illusions
Licence: CC-BY 2.5