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Baseline dependent differences in the perception of changes in visuomotor delay.
Gesche Vigh1,2, Jakub Limanowski2,3
1Faculty of Psychology, Technical University of Dresden, Dresden, Germany.
Frontiers in Human Neuroscience
|January 21, 2025
Summary
Perception of visuomotor delay changes is affected by existing delay. Detection accuracy and speed were better with larger baseline delays, challenging the Weber-Fechner Laws in this domain.
Area of Science:
- Neuroscience
- Human-Computer Interaction
- Perception
Background:
- The adaptation to delayed visual movement feedback is well-researched.
- A key question remains whether Weber-Fechner Laws apply to visuomotor delay perception.
Purpose of the Study:
- To investigate if the perception of changes in visuomotor delay is dependent on the baseline delay present during movement.
- To determine if Weber-Fechner Laws accurately predict the detection of visuomotor delay changes.
Main Methods:
- A virtual reality continuous hand movement task was employed.
- Participants (N=40) performed auditory-paced grasping movements with delayed visual feedback (0-700 ms).
- A roving oddball design tracked detection accuracy and speed relative to delay change magnitude and baseline delay.
Main Results:
- Larger delay changes were detected more accurately than smaller ones.
- Surprisingly, delay changes were detected more accurately and faster under larger baseline delays (> small delays).
Conclusions:
- Visuomotor delay significantly impacts the detection of its own changes, but not in line with Weber-Fechner Laws.
- Lower tolerance for delay changes at small baseline delays may stem from intersensory conflict attenuation.
- Enhanced detection at large delays could be due to increased visual saliency and prediction violation.
