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Coordination and localization in spinal motor systems.

Matthew C Tresch1, Philippe Saltiel, Andrea d'Avella

  • 1Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

Brain Research. Brain Research Reviews
|February 19, 2003
PubMed
Summary
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Vertebrate spinal motor systems generate movement by flexibly combining basic motor output units. These spinally generated units simplify complex movements by regulating common behavioral features.

Area of Science:

  • Neuroscience
  • Motor Control
  • Biophysics

Background:

  • Vertebrate movement control is complex.
  • Understanding the fundamental units of motor output is crucial.

Purpose of the Study:

  • To review experimental evidence supporting the hypothesis of motor output units.
  • To examine the localization of neural networks generating these units within the spinal cord.

Main Methods:

  • Review of diverse experimental preparations.
  • Analysis of various experimental techniques.

Main Results:

  • Evidence supports the existence of spinally generated motor output units.
  • Specific spinal cord regions are identified as responsible for producing these units.

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Conclusions:

  • Spinal motor systems likely utilize a flexible combination of motor units.
  • This organization simplifies movement production and reduces degrees of freedom.