Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Adaptation of postural control to weightlessness.

G Clément, V S Gurfinkel, F Lestienne

    Experimental Brain Research
    |January 1, 1984
    PubMed
    Summary

    Motor control adapts to weightlessness by altering posture regulation. In space, ankle flexor muscles predominantly maintain upright posture, showing both fast and slow adaptation processes.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Exploration of sleep quality and rest-activity rhythms characteristics in Bilateral Vestibulopathy patients.

    Sleep medicine·2024
    Same author

    Spinocerebellar ataxia 27B (SCA27B), a frequent late-onset cerebellar ataxia.

    Revue neurologique·2024
    Same author

    Unveiling autonomic failure in synucleinopathies: Significance in diagnosis and treatment.

    Revue neurologique·2024
    Same author

    Clinical evaluation of anaesthetic-like effect of two dermocosmetic formulations containing Aquaphilus dolomiae extract-G3 in subjects with sensitive facial skin.

    Journal of the European Academy of Dermatology and Venereology : JEADV·2022
    Same author

    Combined stoma reversal and liver resection for rectal metastatic cancer: A single center retrospective analysis.

    Journal of visceral surgery·2021
    Same author

    THz Smith-Purcell and grating transition radiation from metasurface: experiment and theory.

    Optics letters·2021

    Area of Science:

    • Human physiology
    • Neuroscience
    • Space medicine

    Background:

    • Understanding motor control adaptation is crucial for astronaut health and mission success.
    • Weightlessness significantly alters sensory input and motor output, challenging postural stability.

    Purpose of the Study:

    • To investigate the adaptation of motor control for upright posture during a 7-day spaceflight.
    • To examine the role of visual cues in maintaining posture during weightlessness.
    • To identify the mechanisms of central program adaptation for posture regulation in space.

    Main Methods:

    • Analysis of cinematographic and mechanographic data during voluntary arm and tiptoe movements.
    • Evaluation of postural perturbations under varying visual conditions (normal, central, no vision).
    • Monitoring of leg muscle activity and initial posture changes throughout the spaceflight.

    Main Results:

    • Postural perturbations in weightlessness were similar to Earth conditions but maintained by ankle flexor muscles.
    • Leg muscle activity patterns were structured and showed minor variations during flight.
    • Initial posture shifted from an exaggerated oblique position to a terrestrial standing position.
    • Visual information was critical for recalibrating sensory cues early in the mission.

    Conclusions:

    • Two adaptation processes were identified: a fast
    • operative process
    • involving rapid motor command redistribution and a slow
    • conservative process
    • characterized by reduced anticipatory muscle activation.
    • These findings highlight the central nervous system's ability to adapt posture regulation to the unique demands of weightlessness.

    Related Experiment Videos