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See What You Feel: A Crossmodal Tool for Measuring Haptic Size Illusions.
Olga Daneyko1, Angelo Maravita2, Daniele Zavagno2
1Department of Psychology, Sociology and Politics, Sheffield Hallam University.
I-Perception
|August 28, 2020
Summary
This study introduces a simple crossmodal method, See what you feel, to measure haptic size illusions. The robust and understandable technique reliably quantifies perceptual distortions in touch.
Area of Science:
- Psychology
- Neuroscience
- Sensory Perception
Background:
- Haptic perception involves tactile and proprioceptive information.
- Size illusions demonstrate the brain's active construction of sensory experience.
- Quantifying these illusions aids understanding of sensory integration.
Purpose of the Study:
- To introduce and validate a user-friendly crossmodal method for measuring haptic size illusions.
- To assess the efficacy of the 'See what you feel' method using a classic haptic aftereffect paradigm.
Main Methods:
- Developed a 'See what you feel' crossmodal technique.
- Utilized Uznadze's haptic aftereffect with adapting and test spheres.
- Employed a 3D visual scale for participants to match perceived sizes of unseen objects.
Main Results:
- The 'See what you feel' method successfully measured the magnitude of haptic size illusions.
- The technique demonstrated robustness across 160 participants.
- Participants found the method easy to understand and use.
Conclusions:
- The 'See what you feel' method is a reliable and accessible tool for quantifying haptic size illusions.
- This approach offers a valuable contribution to the study of crossmodal perception and sensory aftereffects.
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