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Motor strategies and adiabatic invariants: The case of rhythmic motion in parabolic flights

dc.rights.licenseOTHen_US
dc.contributor.authorWhite, Olivier
dc.contributor.authorDierick, Frédéric
dc.contributor.authorDehouck, Victor
dc.contributor.authorBuisseret, Fabien
dc.contributor.authorBoulanger, Nicolas
dc.date.accessioned2021-12-06T13:26:58Z
dc.date.available2021-12-06T13:26:58Z
dc.date.issued2021-08-05
dc.identifier.urihttps://luck.synhera.be/handle/123456789/1525
dc.identifier.doi10.1103/PhysRevE.104.024403en_US
dc.description.abstractThe role of gravity in human motor control is at the same time obvious and difficult to isolate. It can be assessed by performing experiments in variable gravity. We propose that adiabatic invariant theory may be used to reveal nearly conserved quantities in human voluntary rhythmic motion, an individual being seen as a complex time-dependent dynamical system with bounded motion in phase space. We study an explicit realization of our proposal: An experiment in which we asked participants to perform∞−shaped motion of their right arm during a parabolic flight, either at self-selected pace or at a metronome’s given pace. Gravity varied between 0 and 1.8 g during a parabola. We compute the adiabatic invariants in the participant’s frontal plane assuming a separable dynamics. It appears that the adiabatic invariant in vertical direction increases linearly with g, in agreement with our model. Differences between the free and metronome-driven conditions show that participants’ adaptation to variable gravity is maximal without constraint. Furthermore, motion in the participant’s transverse plane induces trajectories that may be linked to higher-derivative dynamics. Our results show that adiabatic invariants are relevant quantities to show the changes in motor strategy in time-dependent environments.en_US
dc.description.sponsorshipNoneen_US
dc.language.isoENen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.ispartofPhysical Review Een_US
dc.rights.urihttps://journals.aps.org/authors/transfer-of-copyright-agreementen_US
dc.subjectMécaniqueen_US
dc.subjectGravitationen_US
dc.subjectContrôle moteuren_US
dc.titleMotor strategies and adiabatic invariants: The case of rhythmic motion in parabolic flightsen_US
dc.typeArticle scientifiqueen_US
synhera.classificationPhysique, chimie, mathématiques & sciences de la terreen_US
synhera.institutionCeREF Techniqueen_US
synhera.otherinstitutionUMONSen_US
synhera.otherinstitutionUniversité de Dijonen_US
synhera.otherinstitutionUCLouvainen_US
synhera.otherinstitutionRehazenteren_US
synhera.otherinstitutionHELHaen_US
synhera.cost.total0en_US
synhera.cost.apc0en_US
synhera.cost.comp0en_US
synhera.cost.acccomp0en_US
dc.description.versionOuien_US
dc.rights.holder0en_US


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