Literature DB >> 21696945

The role of a midbrain network in competitive stimulus selection.

Shreesh P Mysore1, Eric I Knudsen.   

Abstract

A midbrain network interacts with the well-known frontoparietal forebrain network to select stimuli for gaze and spatial attention. The midbrain network, containing the superior colliculus (SC; optic tectum, OT, in non-mammalian vertebrates) and the isthmic nuclei, helps evaluate the relative priorities of competing stimuli and encodes them in a topographic map of space. Behavioral experiments in monkeys demonstrate an essential contribution of the SC to stimulus selection when the relative priorities of competing stimuli are similar. Neurophysiological results from the owl OT demonstrate a neural correlate of this essential contribution of the SC/OT. The multi-layered, spatiotopic organization of the midbrain network lends itself to the analysis and modeling of the mechanisms underlying stimulus selection for gaze and spatial attention.
Copyright © 2011 Elsevier Ltd. All rights reserved.

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Year:  2011        PMID： 21696945      PMCID： PMC3177965          DOI： 10.1016/j.conb.2011.05.024

Source DB:  PubMed          Journal:  Curr Opin Neurobiol        ISSN： 0959-4388            Impact factor:   6.627


  66 in total

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