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Why and how are posture and movement coordinated?

Jean Massion1, Alexei Alexandrov, Alexander Frolov

  • 1Laboratoire Parole et Langage, Université de Provence, 13621 Aix-en-Provence, France. jean.massion@lpl.univ-aix.fr

Progress in Brain Research
|December 5, 2003
PubMed
Summary
This summary is machine-generated.

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Coordination of posture and movement is essential for motor acts. Evidence suggests a dual control system, separate for movement and posture, effectively manages this coordination.

Area of Science:

  • Neuroscience
  • Biomechanics
  • Motor Control

Background:

  • Motor acts require coordinated posture and movement for task achievement.
  • Posture serves antigravity and environmental interfacing roles, enabling perception and action.
  • Central control of posture involves genetic and hierarchical models.

Purpose of the Study:

  • To investigate the mechanisms underlying posture-movement coordination.
  • To evaluate central control models for posture.
  • To determine if a single or dual control system manages posture and movement.

Main Methods:

  • Discussion of posture's nature and functions.
  • Evaluation of genetic and hierarchical models for central posture control.
  • Biomechanical analysis using the eigenmovement approach to examine coordination.

Related Experiment Videos

Main Results:

  • Posture has critical antigravity and sensory-motor interfacing functions.
  • Hierarchical model of posture control includes internal representation and execution levels.
  • Biomechanical analysis supports a dual, coordinated control system for movement and posture.

Conclusions:

  • A dual control system, distinct for movement and posture, is proposed.
  • This dual system facilitates effective coordination between posture and movement in motor acts.
  • The eigenmovement approach provides evidence for this dual control mechanism.