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Proprioceptive regulation of interlimb behavior: interference between passive movement and active coordination

D J Serrien1, Y Li, M Steyvers

  • 1Motor Control Laboratory, Department of Kinesiology, K.U. Leuven, Belgium. D.Serrien@ion.ucl.ac.uk

Experimental Brain Research
|October 31, 2001
PubMed
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Passive limb movement disrupts coordinated movements, particularly anti-phase patterns. Sensory discrimination is key to maintaining task performance under such perturbations.

Area of Science:

  • Motor control
  • Human movement science
  • Neuroscience

Background:

  • Human motor control relies on the precise coordination of multiple effectors.
  • Understanding how external perturbations affect coordinated movements is crucial for rehabilitation and performance enhancement.

Purpose of the Study:

  • To investigate the impact of passive limb movement on the coordination dynamics of homolateral effectors.
  • To determine how different parameters of passive movement (frequency, amplitude, scaling) influence in-phase and anti-phase coordination modes.

Main Methods:

  • Participants performed in-phase and anti-phase coordination tasks with homolateral limbs (e.g., right arm/right leg).
  • Passive movement was imposed on a third limb (contralateral arm or leg) with varying frequency, amplitude, and scaling.

Related Experiment Videos

  • The degree of coordination disruption was quantified for both in-phase and anti-phase modes.

    • Main Results:

    • Passive movement significantly degraded anti-phase coordination more than in-phase coordination.
    • Frequency manipulation of the passive limb caused profound deterioration of anti-phase patterns.
    • Amplitude manipulation showed a linear association with anti-phase pattern deterioration, while scaling had no additional effect.

    Conclusions:

    • Passive limb movement acts as a perturbation, disturbing the dynamics of actively performed coordinated tasks.
    • The degree of interference depends on the specific parameters of the passive movement, suggesting varying intrusiveness of irrelevant sensory input.
    • Effective sensory discrimination between relevant and irrelevant afferent information is critical for maintaining adequate performance during perturbed movements.