Cited by 156Visual perception and processing mechanismsNeural dynamics and brain functionMultisensory perception and integration

Gain control in the visual thalamus during perception and cognition

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Saalmann, Yuri B, Kastner, Sabine·2009·Current Opinion in Neurobiology

Abstract

The thalamus has traditionally been thought to passively relay sensory information to the cortex. By showing that responses in visual thalamus are modulated by perceptual and cognitive tasks, recent fMRI and physiology studies have helped revise this view. The modulatory input to the visual thalamus derives from functionally distinct cortical and subcortical feedback pathways. These pathways enable the lateral geniculate nucleus and pulvinar to regulate the information transmitted to cortical areas according to cognitive requirements. Emerging evidence suggests that such regulation involves changing the degree of synchrony between neurons as well as changing the magnitude of thalamic activity. These findings support a role for the thalamus that extends as far as contributing to the control of visual attention and awareness.

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Crossref · 10.1016/j.conb.2009.05.007

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  • Synchronous gain control offers a neurobiological mechanism to adjust effective synaptic gain transiently across cortical regions.

    “This synchronous gain control offers a neurobiological mechanism to adjust effective synaptic gain transiently across cortical regions [55,58].”

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Authors
Saalmann, Y. B., & Kastner, S.
Affiliations
Princeton University (US)
Venue
Current Opinion in Neurobiology
Publisher
Elsevier BV
Published
2009-08
Volume
19
Issue
4
Pages
408-414
ISSN
0959-4388 (ISSN-L)
OpenAlex
W1984001074
Cited by
156
References
50
Citations by year
2026: 4 · 2025: 11 · 2024: 7 · 2023: 6 · 2022: 14 · 2021: 11 · 2020: 9 · 2019: 5 · 2018: 8 · 2017: 8 · 2016: 12 · 2015: 13 · 2014: 12 · 2013: 14 · 2012: 7
FWCI
0.52
Type
journal article
Language
en
Open access
Locations
  • Current Opinion in Neurobiology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (2r01ey017699-14)
  • National Institute of Mental Health (R01MH064043)
  • National Eye Institute (R01EY-017699, R21EY021078)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Multisensory perception and integration
Keywords
visual thalamus, gain control, lateral geniculate nucleus, pulvinar, cortical feedback, neuronal synchronization, visual attention, visual awareness, perception, cognition
MeSH terms
Attention, Cerebral Cortex, Cognition, Humans, Magnetic Resonance Imaging, Neurons, Afferent, Thalamic Nuclei, Visual Pathways, Visual Perception

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