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Updated: Jul 6, 2025
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Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback
Published on: May 23, 2019
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Multisensory processing and proprioceptive plasticity during resizing illusions
Kirralise J Hansford1, Daniel H Baker2, Kirsten J McKenzie3
1University of York, Heslington, York, YO10 5DD, UK. kirralisehansford@gmail.com.
Experimental Brain Research
|January 2, 2024
Summary
Adding non-naturalistic auditory input to augmented reality finger stretching illusions enhanced subjective experience without tactile feedback. However, this auditory addition did not improve performance on related tasks.
Area of Science:
- Cognitive psychology
- Neuroscience
- Human-computer interaction
Background:
- Bodily resizing illusions often rely on visual and tactile cues.
- Auditory input, both naturalistic and non-naturalistic, has previously influenced body illusions and size estimations.
- Augmented reality (AR) offers a platform for immersive sensory experiences.
Purpose of the Study:
- To investigate the effect of non-naturalistic auditory input on a hand-based resizing illusion within an AR environment.
- To determine if auditory input enhances subjective illusion strength and performance on objective tasks.
- To explore the interaction between auditory and tactile feedback in bodily illusions.
Main Methods:
- Forty-four participants experienced a finger stretching illusion in AR across three conditions: no feedback, tactile feedback only, and combined tactile and auditory feedback.
- Participants completed dot-touch and ruler judgment tasks to assess performance.
- Subjective illusion strength was measured via questionnaire post-experiment.
Main Results:
- Auditory input significantly increased subjective illusion strength when tactile feedback was absent.
- The addition of auditory input did not enhance subjective illusion strength when tactile feedback was present.
- No performance improvements were observed across any tasks with the addition of auditory input.
Conclusions:
- Non-naturalistic auditory input can augment the subjective experience of bodily illusions, particularly when congruent tactile feedback is missing.
- Auditory stimuli do not appear to enhance objective performance measures in this AR-based resizing illusion.
- Future research could explore different types of auditory stimuli or illusion paradigms.
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