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Related Experiment Videos

Prism exposure affects the proprioceptive frames of reference for interlimb rhythmic coordination.

Michael A Riley1, David P Black

  • 1Department of Psychology at the University of Cincinnati, Cincinnati, OH 45040, USA.

Motor Control
|January 22, 2003
PubMed
Summary

Prism adaptation shifts the felt position of the arm, influencing rhythmic coordination between limbs. This study shows how altered spatial frames of reference affect interlimb coordination without vision.

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Area of Science:

  • Neuroscience
  • Motor Control
  • Human Movement Science

Background:

  • Prism adaptation causes a proprioceptive shift, altering the perceived limb position.
  • Interlimb rhythmic coordination relies on proprioceptive information, especially without visual cues.

Purpose of the Study:

  • To investigate how prism-induced proprioceptive shifts affect interlimb rhythmic coordination.
  • To determine if the spatial frames of reference used in prism adaptation are involved in motor coordination.

Main Methods:

  • Participants performed interlimb rhythmic coordination tasks without vision.
  • Prism adaptation was induced to create a proprioceptive shift.
  • Relative phase and variability of coordination were measured before and after prism exposure.

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Main Results:

  • A reliable shift in the steady states of relative phase was observed after prism exposure.
  • The direction of the phase shift corresponded to the direction of optical displacement.
  • The variability of interlimb coordination remained unaffected by prism adaptation.

Conclusions:

  • Prism adaptation influences interlimb rhythmic coordination by altering spatial frames of reference.
  • Proprioceptive recalibration plays a role in maintaining coordinated movements.
  • The findings suggest shared neural mechanisms for spatial representation and motor coordination.