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An upper temporal limit of action-effect integration as reflected by motor adaptation
Márta Volosin1,2, Olivér Nagybányai Nagy3, Bence Neszmélyi4
1Institute of Cognitive Neuroscience and Psychology, HUN-REN Research Centre for Natural Sciences, Magyar Tudósok körútja 2, Budapest, H-1117, Hungary.
Psychological Research
|April 22, 2025
Summary
Motor adaptation to action effects, like sounds, requires precise timing. This study found the optimal window for this motor optimization is about 290 ms, and this timing is not linked to schizotypy.
Area of Science:
- Cognitive Neuroscience
- Motor Control
- Psychophysics
Background:
- Motor parameters for simple actions are influenced by their sensory consequences.
- Action-effect adaptation, where sensory feedback modifies motor output, typically occurs within a narrow temporal window.
- This temporal limit is crucial for understanding action-effect integration and motor learning.
Purpose of the Study:
- To replicate the effect of action-sound delays on motor force application.
- To investigate the relationship between the schizotypy trait and the temporal window of action-effect related motor optimization.
- To explore how individual differences in temporal perception might influence motor adaptation.
Main Methods:
- Participants performed self-paced pinching actions eliciting a tone with varying delays (0-560 ms).
- Applied force was measured using a force-sensitive device.
- Bayes-factor analysis was used to assess the correlation between motor optimization window size and schizotypy scores.
Main Results:
- Applied force increased with increasing action-effect delay, confirming the importance of temporal contiguity.
- The estimated motor optimization window size was approximately 290 ms.
- No significant correlation was found between the motor optimization window size and schizotypy.
Conclusions:
- Temporal contiguity is essential for action-effect related motor adaptation.
- The motor optimization window for action-effect integration is approximately 290 ms in healthy adults.
- Schizotypy traits do not appear to influence the temporal window for this type of motor adaptation.
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