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Striatal activity during intentional switching depends on pattern stability.

Cinzia De Luca1, Kelly J Jantzen, Silvia Comani

  • 1Department of Clinical Sciences and Bioimaging and Behavioral Imaging and Neural Dynamics Center, Gabriele d'Annunzio University, Chieti, Italy. c.deluca@unich.it

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|March 6, 2010
PubMed
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The basal ganglia, specifically the putamen, play a crucial role in switching between coordinated movements. Putamen activity increases when transitioning to less stable movement patterns, aiding action selection.

Area of Science:

  • Neuroscience
  • Cognitive Science
  • Motor Control

Background:

  • Coordination dynamics theory suggests neural mechanisms for maintaining and switching behaviors.
  • The basal ganglia are implicated in intentional behavior selection and maintenance.

Purpose of the Study:

  • To investigate the basal ganglia's role in switching between bimanual coordination patterns using fMRI.
  • To correlate behavioral measures of pattern stability and switching with neural activity.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was employed.
  • Participants performed bimanual coordination tasks with varying movement rates and stability.
  • Behavioral data on pattern dynamics and switching were analyzed alongside neural activation.

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Main Results:

  • Putamen activity was significantly higher when switching from stable to unstable coordination patterns compared to the reverse.
  • Putamen activity correlated with pattern stability both before and during the switching process.
  • This suggests the putamen modulates action selection and inhibits competing responses.

Conclusions:

  • The putamen's activity is sensitive to the stability of behavioral patterns.
  • Pattern stability influences the basal ganglia's efficiency in selecting among response alternatives.
  • Results support computational models of basal ganglia function in action selection.