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Updated: Jan 10, 2026

Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex
Published on: February 8, 2020
The pulvinar regulates plasticity in human visual cortex
Miriam Acquafredda1, Jan W Kurzawski2, Laura Biagi3
1Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy.
Short-term visual deprivation alters brain connectivity in adults. Reduced pulvinar-to-V1 functional connectivity is linked to ocular dominance shifts, suggesting pulvinar gating of visual cortex plasticity.
Area of Science:
- Neuroscience
- Visual Neuroscience
- Cognitive Neuroscience
Background:
- Adult primary visual cortex (V1) exhibits transient ocular dominance shifts after short periods of monocular deprivation.
- The pulvinar nucleus plays a role in visual processing and attention.
Purpose of the Study:
- To investigate the impact of monocular deprivation on functional connectivity between the pulvinar and V1 in humans.
- To explore the relationship between pulvinar-V1 connectivity and the magnitude of ocular dominance shifts.
Main Methods:
- Monocular deprivation (2 hours) in normally sighted adults.
- Functional magnetic resonance imaging (fMRI) to assess pulvinar-V1 functional connectivity.
- Correlation analysis between connectivity strength and ocular dominance changes.
Main Results:
- Monocular deprivation led to a reduction in pulvinar-to-V1 functional connectivity.
- This reduction was direction-selective, affecting the pulvinar-to-V1 pathway.
- A negative correlation was observed between pulvinar-to-V1 connectivity strength and the ocular dominance shift magnitude.
Conclusions:
- The pulvinar modulates adult V1 plasticity through direction-selective connectivity.
- Short-term visual reorganization is gated by pulvinar signals.
- A revised model of adult V1 plasticity incorporates pulvinar influence.
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