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Exploration strategies influence visual-auditory sensory substitution in a passive guidance setup
Salim Akar1, Loïc Deschamps1, Vincent Roy1
1Univ Rouen Normandie, CRFDP UR 7475, F-76000 Rouen, France.
Acta Psychologica
|September 27, 2025
Summary
Micro-scanning (MIC) passive guidance with sensory substitution devices (SSDs) significantly improved 2D shape perception accuracy and confidence. This strategy enhances proprioception and sensorimotor learning for better assistive technology design.
Area of Science:
- Neuroscience
- Human-Computer Interaction
- Rehabilitation Technology
Background:
- Sensory substitution devices (SSDs) offer alternative sensory input for perception.
- Passive exploration strategies may influence learning with SSDs.
- Understanding optimal guidance is crucial for SSD efficacy.
Purpose of the Study:
- To investigate the origin of perception during passive exploration with SSDs.
- To determine if passive guidance strategies affect 2D shape perception.
- To compare the effectiveness of different passive exploration strategies.
Main Methods:
- Forty-eight participants used SSDs for passive exploration of 2D shapes.
- Four distinct passive guidance strategies were employed: macro-scanning (MAC), spatio-temporal (ST), micro-scanning (MIC), and contour exploration (C).
- Participants transitioned to active exploration post-passive phase; accuracy and confidence were measured.
Main Results:
- All participants showed improved shape perception after passive exploration.
- The micro-scanning (MIC) strategy group exhibited the highest accuracy and confidence.
- This MIC strategy advantage persisted during both passive and active exploration phases.
Conclusions:
- The micro-scanning (MIC) strategy appears to optimize proprioceptive feedback and sensorimotor contingencies.
- Effective passive guidance strategies are vital for maximizing SSD utility.
- Findings can inform the design of rehabilitation techniques and assistive technologies.
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