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Right-left hand asymmetry in manual tracking: when poorer control is associated with better adaptation and interlimb transfer

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Abstract

To date, interlimb transfer following visuomotor adaptation has been mainly investigated through discrete reaching movements. Here we explored this issue in the context of continuous manual tracking, a task in which the contribution of online feedback mechanisms is crucial, and in which there is a well-established right (dominant) hand advantage under baseline conditions. We had two objectives (1) to determine whether this preexisting hand asymmetry would persist under visuomotor rotation, (2) to examine interlimb transfer by assessing whether prior experience with the rotation by one hand benefit to the other hand. To address these, 44 right-handed participants were asked to move a joystick and to track a visual target following a rather unpredictable trajectory. Visuomotor adaptation was elicited by introducing a 90° rotation between the joystick motion and the cursor motion. Half of the participants adapted to the rotation first with the right hand, and then with the left, while the other half performed the opposite protocol. As expected during baseline trials, the left hand was less accurate while also exhibiting more variable and exploratory behavior. However, participants exhibited a left hand advantage during first exposure to the rotation. Moreover, interlimb transfer was observed albeit more strongly from the left to the right hand. We suggest that the less effective and more variable/exploratory control strategy of the left hand promoted its adaptation, which incidentally favored transfer from left to right hand. Altogether, this study speaks for further attention to the dominant/non-dominant asymmetry during baseline before examining interlimb transfer of adaptation.

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Data that support the findings of this study will be made available upon reasonable request.

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Acknowledgements

We thank Cedric Goulon and Franck Buloup for technical support and providing respectively their ICE and Docometre software (courtesy of Institut des Sciences du Mouvement, Marseille, France). We are also thankful for getting access to the human behavior analysis facilities of the Maison des Sciences de l’Homme et de la Société (MSHS) of Poitiers (UAR 3565 CNRS—Université de Poitiers).

Funding

Adrien Coudiere is supported by a fellowship from the “Ministère de l’Enseignement Supérieur et de la Recherche” and the “Université de Poitiers”.

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AC and FD performed data collection and data curation. All authors participated to original draft preparation, reviewing and editing the manuscript.

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Correspondence to Frederic R. Danion.

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The authors state that they have no conflict of interest.

Ethical approval

All aspects of this study were performed in accordance with the ethical standards set out in the 1964 Declaration of Helsinki and its later amendments. The study was conducted in accordance with national standards and guidelines for the protection of human participants and was approved by the local ethics committee (comité d’éthique pour la recherche en sciences et techniques des activités physiques et sportives).

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Coudiere, A., de Rugy, A. & Danion, F.R. Right-left hand asymmetry in manual tracking: when poorer control is associated with better adaptation and interlimb transfer. Psychological Research 88, 594–606 (2024). https://doi.org/10.1007/s00426-023-01858-0

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  • DOI: https://doi.org/10.1007/s00426-023-01858-0

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