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A Fine Motor Task to Study Joint Kinematics in a Preclinical Model of Neurodegenerative Disease
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Learning fast accurate movements requires intact frontostriatal circuits.

Britne Shabbott1, Roshni Ravindran, Joseph W Schumacher

  • 1Motor Performance Lab, Department of Neurology, The Neurological Institute, Columbia University New York, NY, USA.

Frontiers in Human Neuroscience
|December 7, 2013
PubMed
Summary

The basal ganglia are vital for motor skill learning, not just movement execution. Huntington

Keywords:
basal gangliakinematicsmotor skillmovement disorderneurodegenerativeneurologicalreachingstriatum

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Area of Science:

  • Neuroscience
  • Motor Control
  • Neurodegenerative Diseases

Background:

  • The basal ganglia's role in motor skill learning is not fully understood.
  • Existing research faces challenges in defining motor skill learning and separating learning deficits from execution impairments.

Purpose of the Study:

  • To investigate the role of the basal ganglia in motor skill learning.
  • To address definition and performance confounds in motor learning research.

Main Methods:

  • Studied speed-accuracy learning in fast reaching movements.
  • Compared individuals with Huntington's disease (HD) to premanifest carriers and controls.
  • Modeled learning-baseline performance relationships to isolate learning impairments.

Main Results:

  • Individuals with HD showed significant motor learning impairment.
  • This impairment was independent of initial movement execution differences.
  • Basal ganglia disorder impacts both movement execution and motor learning.

Conclusions:

  • The basal ganglia are essential for both motor execution and skill acquisition.
  • This study clarifies the basal ganglia's specific contribution to motor learning.
  • Findings advance understanding of neurodegenerative impacts on motor function.