Independent circuits in the basal ganglia for the evaluation and selection of actions.

@article{StephensonJones2013IndependentCI,
  title={Independent circuits in the basal ganglia for the evaluation and selection of actions.},
  author={Marcus Stephenson-Jones and Andreas A. Kardamakis and Brita Robertson and Sten Grillner},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2013},
  volume={110 38},
  pages={E3670-9}
}
The basal ganglia are critical for selecting actions and evaluating their outcome. Although the circuitry for selection is well understood, how these nuclei evaluate the outcome of actions is unknown. Here, we show in lamprey that a separate evaluation circuit, which regulates the habenula-projecting globus pallidus (GPh) neurons, exists within the basal ganglia. The GPh neurons are glutamatergic and can drive the activity of the lateral habenula, which, in turn, provides an indirect inhibitory… CONTINUE READING
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