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Published on: November 9, 2011
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Synergy mediates Long-Range Correlations in the Visual Cortex Near Criticality
Hardik Rajpal1,2,3, Cedric Stefens4, Meghdad Saeedian1,2
1Centre for Complexity Sciences, Imperial College London, London, United Kingdom.
Biorxiv : the Preprint Server for Biology
|November 26, 2025
Summary
Brain activity shows long-range correlations, crucial for information processing near criticality. Synergistic neural interactions, not just redundant ones, drive these correlations, enhancing brain function during visual stimulation.
Area of Science:
- Neuroscience
- Computational Neuroscience
- Systems Neuroscience
Background:
- Long-range correlations are key indicators of systems near criticality, enabling extended spatial interactions.
- These correlations are observed in the brain, suggesting optimal information processing and adaptability near a critical point.
- The precise mechanisms driving these long-range neural correlations remain unclear.
Purpose of the Study:
- Investigate the role of synergistic interactions in mediating long-range correlations in the mouse visual cortex.
- Understand how information interactions contribute to neural communication across distances.
- Explore the computational basis of long-range correlations in neural systems.
Main Methods:
- Utilized mesoscale two-photon calcium imaging to record activity from thousands of neurons.
- Analyzed neuronal population activity across a wide field of view.
- Applied Partial Information Decomposition (PID) to differentiate synergistic and redundant information interactions.
Main Results:
- Confirmed the presence of long-range correlations at the neuronal population level.
- Found that visual stimulation significantly increased synergistic interactions more than redundant ones.
- Demonstrated that synergistic and redundant interactions complement each other for efficient long-range information processing.
Conclusions:
- Synergistic interactions play a crucial role in mediating long-range correlations in the visual cortex.
- The brain utilizes complementary synergistic and redundant interactions for efficient information processing.
- These findings offer new insights into the computational mechanisms underlying neural correlations and criticality.
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