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The Pulvinar Regulates Information Transmission Between Cortical Areas Based on Attention Demands
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The Pulvinar Regulates Information Transmission Between Cortical Areas Based on Attention Demands
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Journal Article
The Pulvinar Regulates Information Transmission Between Cortical Areas Based on Attention Demands
2012
Overview
Selective attention mechanisms route behaviorally relevant information through large-scale cortical networks. Although evidence suggests that populations of cortical neurons synchronize their activity to preferentially transmit information about attentional priorities, it is unclear how cortical synchrony across a network is accomplished. Based on its anatomical connectivity with the cortex, we hypothesized that the pulvinar, a thalamic nucleus, regulates cortical synchrony. We mapped pulvino-cortical networks within the visual system, using diffusion tensor imaging, and simultaneously recorded spikes and field potentials from these interconnected network sites in monkeys performing a visuospatial attention task. The pulvinar synchronized activity between interconnected cortical areas according to attentional allocation, suggesting a critical role for the thalamus not only in attentional selection but more generally in regulating information transmission across the visual cortex.
Publisher
American Association for the Advancement of Science,The American Association for the Advancement of Science
Subject
/ Animals
/ Biological and medical sciences
/ Brain
/ Cortexes
/ Cues
/ Eye and associated structures. Visual pathways and centers. Vision
/ Fundamental and applied biological sciences. Psychology
/ Male
/ Monkeys
/ Neurons
/ Pulvinar
/ T tests
/ Tensors
/ thalamus
/ Vertebrates: nervous system and sense organs
/ Visual
