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[Postural adjustment associated with cat movement]

H Régis, E Trouche, J Massion

    Comptes Rendus Hebdomadaires Des Seances De L'Academie Des Sciences. Serie D: Sciences Naturelles
    |October 13, 1975
    PubMed
    Summary
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    Movement and postural adjustment in cats are linked. Stimulating the motor cortex, red nucleus, or radial nerve caused forelimb flexion, with the other forelimb adjusting its posture to compensate. This suggests a common central command controls both actions.

    Area of Science:

    • Neuroscience
    • Motor Control
    • Biophysics

    Context:

    • Studies on sensorimotor integration often use animal models.
    • Understanding postural adjustments is crucial for locomotion and balance.
    • Cats provide a well-established model for studying motor control due to their agility.

    Purpose:

    • To investigate the relationship between limb movement and associated postural adjustments.
    • To determine if a common central command underlies voluntary movement and postural reflexes.
    • To quantify forces exerted by feline forelimbs during elicited movements.

    Summary:

    • Cats standing in a hammock had forelimb forces measured using strain gauge transducers.
    • Elicited forelimb flexion (via motor cortex, red nucleus, or radial nerve stimulation) resulted in unloading of the moving limb.

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  • The contralateral forelimb exhibited compensatory loading, indicating a coordinated postural adjustment.
  • These findings support the hypothesis of a shared central command coordinating movement and postural responses.

    • Impact:

    • Provides evidence for a unified neural control system for movement and posture.
    • Enhances understanding of sensorimotor integration in mammals.
    • Potential implications for rehabilitation strategies targeting motor deficits and balance disorders.