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A cross-species comparison of corticogeniculate structure and function

Published online by Cambridge University Press:  16 November 2017

J. MICHAEL HASSE  and
FARRAN BRIGGS
J. MICHAEL HASSE
Affiliation:
Program in Experimental and Molecular Medicine at Dartmouth, Hanover, New Hampshire Ernest J. Del Monte Institute for Neuroscience, University of Rochester School of Medicine, Rochester, New York
FARRAN BRIGGS*
Affiliation:
Program in Experimental and Molecular Medicine at Dartmouth, Hanover, New Hampshire Ernest J. Del Monte Institute for Neuroscience, University of Rochester School of Medicine, Rochester, New York Neuroscience, University of Rochester School of Medicine, Rochester, New York Center for Visual Science, University of Rochester, Rochester, New York
*
*Address correspondence to: Farran Briggs. E-mail: farran_briggs@urmc.rochester.edu
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Abstract

The corticogeniculate circuit is an evolutionarily conserved pathway linking the primary visual cortex with the visual thalamus in the feedback direction. While the corticogeniculate circuit is anatomically robust, the impact of corticogeniculate feedback on the visual response properties of visual thalamic neurons is subtle. Accordingly, discovering the function of corticogeniculate feedback in vision has been a particularly challenging task. In this review, the morphology, organization, physiology, and function of corticogeniculate feedback is compared across mammals commonly studied in visual neuroscience: primates, carnivores, rabbits, and rodents. Common structural and organizational motifs are present across species, including the organization of corticogeniculate feedback into parallel processing streams in highly visual mammals.

Keywords

CorticogeniculateV1LGN
Type
Review Article
Information
Visual Neuroscience , Volume 34 , 2017 , E016
Copyright
Copyright © Cambridge University Press 2017 

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