PMID 3085570

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PMID 3085570

Alexander et al describe 5 distinct cortico-striato-thalamic circuits; each circuit is color coded in the image above. Information flow (as interpreted from the neural projections) is depicted as counter-clockwise in this image. Click the image for a larger version.

Title

Parallel organization of functionally segregated circuits linking basal ganglia and cortex.

Authors

Alexander GE, DeLong MR, Strick PL

Year

1986

Abstract

Article does not provide an abstract.

Phenowiki Abstract

Early data suggested the basal ganglia as an integration center for diverse cortical input, which was funneled to the motor cortex via the thalamus. Results contemporary to the review revealed more nuanced organization by virtue of topographical segregation maintained throughout the circuit, and therefore suggest semi-segregated processing for distinct sensory modalities and purposes. The pathways constitute a loop from cortex to striatum to the pallidum and substantia nigra to the thalamus, whereupon the loop returns to a specific portion of the cortex. Each loop performs integration limited to information from a few cortical areas. The findings help clarify the relationship of the basal ganglia to several behaviors.

Keywords

Article does not provide keywords.

Phenowiki Keywords

basal ganglia; motor; cortex; thalamus

Input Author

A Howe

Notes

The article reviews evidence for basal ganglia circuits, and the authors present a set of parallel loops for processing information from different sensory modalities in the basal ganglia. The image depicts the page contributor's version of the circuitry presented in the review.

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