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<p>Motor parameters of simple, repetitive actions like tapping, pinching, or pushing a button differ as a function of their action effects – adding a consistent, immediate sound-effect to such actions leads to a decrease in applied force. This action-effect related motor adaptation occurs only, however, when the sound-effect follows actions within about 200 ms, which has been hypothesized to reflect a temporal limit of action-effect integration. Using a university student sample, the present study replicated the effect of action-sound effect delays on force application. Furthermore, given that the perception of action-effect contingencies, and that of temporal relations are deteriorated in schizophrenia, we explored the relationship between the schizotypy trait and the duration of the action-effect related motor optimization window. Participants pinched a force sensitive device every 3&#xa0;s on their own volition, which elicited a tone with a delay increasing from block to block in 70 ms steps from 0 to 560 ms. The applied force gradually increased with action-effect delay, with an estimated force optimization window size of 290 ms, confirming the importance of temporal contiguity in action-effect related motor adaptation. A Bayes-factor based analysis provided evidence for no correlation between the motor optimization window size and schizotypy.</p>

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An upper temporal limit of action-effect integration as reflected by motor adaptation

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月23日

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  • Márta Volosin,
  • Olivér Nagybányai Nagy,
  • Bence Neszmélyi,
  • János Horváth

摘要

Motor parameters of simple, repetitive actions like tapping, pinching, or pushing a button differ as a function of their action effects – adding a consistent, immediate sound-effect to such actions leads to a decrease in applied force. This action-effect related motor adaptation occurs only, however, when the sound-effect follows actions within about 200 ms, which has been hypothesized to reflect a temporal limit of action-effect integration. Using a university student sample, the present study replicated the effect of action-sound effect delays on force application. Furthermore, given that the perception of action-effect contingencies, and that of temporal relations are deteriorated in schizophrenia, we explored the relationship between the schizotypy trait and the duration of the action-effect related motor optimization window. Participants pinched a force sensitive device every 3 s on their own volition, which elicited a tone with a delay increasing from block to block in 70 ms steps from 0 to 560 ms. The applied force gradually increased with action-effect delay, with an estimated force optimization window size of 290 ms, confirming the importance of temporal contiguity in action-effect related motor adaptation. A Bayes-factor based analysis provided evidence for no correlation between the motor optimization window size and schizotypy.