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Movement planning and feedback are sufficient for sensory prediction error computation and motor adaptation

View ORCID ProfileOlivia A. Kim, Alexander D. Forrence, Samuel D. McDougle
doi: https://doi.org/10.1101/2021.08.12.456140
Olivia A. Kim
1Department of Psychology, Princeton University, Princeton, NJ 08544
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  • For correspondence: oakim@princeton.edu kim.olivia.a@gmail.com
Alexander D. Forrence
2Department of Psychology, Yale University, New Haven, CT 06511
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Samuel D. McDougle
2Department of Psychology, Yale University, New Haven, CT 06511
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ABSTRACT

Prediction errors guide many forms of learning, providing teaching signals that help us improve our performance. Implicit motor adaptation, for instance, is driven by sensory prediction errors (SPEs), which occur when the expected and observed consequences of a movement differ. Traditionally, SPE computation is thought to require movement execution. However, recent work suggesting that the brain generates and accounts for sensory predictions based on motor imagery or planning alone calls this assumption into question. Here, by measuring implicit adaptation during a visuomotor task, we tested whether motor planning and well-timed sensory feedback are sufficient for SPE computation. Human participants were cued to reach to a target and were, on a subset of trials, rapidly cued to withhold these movements. Errors displayed both on trials with and without movements induced single-trial implicit learning. Learning following trials without movements persisted even when movement trials had never been paired with errors, and when the direction of movement and sensory feedback trajectories were decoupled. These observations demonstrate that the brain can compute SPEs without generating overt movements, leading to the adaptation of planned movements even when they are not performed.

Competing Interest Statement

The authors have declared no competing interest.

Footnotes

  • CONFLICT OF INTEREST The authors declare no competing financial interests.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY 4.0 International license.
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Posted February 23, 2022.
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Movement planning and feedback are sufficient for sensory prediction error computation and motor adaptation
Olivia A. Kim, Alexander D. Forrence, Samuel D. McDougle
bioRxiv 2021.08.12.456140; doi: https://doi.org/10.1101/2021.08.12.456140
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Movement planning and feedback are sufficient for sensory prediction error computation and motor adaptation
Olivia A. Kim, Alexander D. Forrence, Samuel D. McDougle
bioRxiv 2021.08.12.456140; doi: https://doi.org/10.1101/2021.08.12.456140

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