Cited by 663Neural dynamics and brain functionMemory and Neural MechanismsNeuroscience and Neuropharmacology Research

Thalamic amplification of cortical connectivity sustains attentional control

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Schmitt, L. Ian, Wimmer, Ralf D., Nakajima, Miho, Happ, Michael, Mofakham, Sima, Halassa, Michael M.·2017·Nature

Abstract

Although interactions between the thalamus and cortex are critical for cognitive function, the exact contribution of the thalamus to these interactions remains unclear. Recent studies have shown diverse connectivity patterns across the thalamus, but whether this diversity translates to thalamic functions beyond relaying information to or between cortical regions is unknown. Here we show, by investigating the representation of two rules used to guide attention in the mouse prefrontal cortex (PFC), that the mediodorsal thalamus sustains these representations without relaying categorical information. Specifically, mediodorsal input amplifies local PFC connectivity, enabling rule-specific neural sequences to emerge and thereby maintain rule representations. Consistent with this notion, broadly enhancing PFC excitability diminishes rule specificity and behavioural performance, whereas enhancing mediodorsal excitability improves both. Overall, our results define a previously unknown principle in neuroscience; thalamic control of functional cortical connectivity. This function, which is dissociable from categorical information relay, indicates that the thalamus has a much broader role in cognition than previously thought.

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Authors
Schmitt, L. I., Wimmer, R. D., Nakajima, M., Happ, M., Mofakham, S., & Halassa, M. M.
Affiliations
NYU Langone Health (US)
Corresponding author
Halassa, Michael M.
Venue
Nature
Published
2017-05
Volume
545
Issue
7653
Pages
219-223
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2611485120
Cited by
663
References
42
Citations by year
2026: 51 · 2025: 64 · 2024: 62 · 2023: 64 · 2022: 72 · 2021: 90 · 2020: 66 · 2019: 64 · 2018: 105 · 2017: 24
FWCI
40.67
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
National Institute of Mental Health (R01MH107680)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
mediodorsal thalamus, prefrontal cortex, cortical connectivity, attentional control, rule representation, thalamocortical interactions, neural sequences, persistent activity
MeSH terms
Animals, Attention, Cognition, Male, Neural Pathways, Thalamus, Prefrontal Cortex, Mice, Optogenetics

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