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The pulvinar nucleus and its role in cognitive functions
Nelson Cortes1, Capucine Mandel1, Lamyae Ikan1
1Visual Neuroscience Laboratory, School of Optometry, Université de Montréal, Montreal, QC, Canada.
Brain Research Bulletin
|December 6, 2025
Summary
The pulvinar, a thalamic hub, shapes perception and cognition through information routing, stimulus selection, and temporal alignment. Its dysregulation is linked to neuropsychiatric conditions, highlighting its role in sensory and affective processing.
Area of Science:
- Neuroscience
- Cognitive Science
Background:
- The pulvinar is a key thalamic structure with extensive connections to cortical and limbic areas.
- Its precise role in higher-order cognitive functions remains incompletely understood.
Purpose of the Study:
- To synthesize evidence on how pulvinar circuits contribute to perception and cognition.
- To explore pulvinar alterations in neuropsychiatric disorders.
- To integrate pulvinar function with contemporary cognitive and affective neuroscience frameworks.
Main Methods:
- Review of lesion, inactivation, and neuroimaging studies.
- Analysis of thalamo-cortical reconfiguration patterns in neuropsychiatric conditions.
- Integration with predictive coding, global workspace, and emotion construction theories.
Main Results:
- Pulvinar circuits perform three key computations: precision-weighted gain, priority mapping, and temporal alignment.
- These computations support attention, sensory gain, and socio-emotional processing.
- Convergent patterns of thalamo-cortical alterations are observed across various neuropsychiatric disorders.
Conclusions:
- The pulvinar acts as a critical modulatory hub influencing both sensory and affective aspects of cognition.
- Understanding pulvinar function is crucial for addressing deficits in neuropsychiatric conditions.
- Future research should prioritize causal investigations in human and animal models.
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