High-Order Triadic Functional Connectivity in the Brain and Beyond
Brain networks organized by triplets of regions, not just pairs
Brain connectivity studies have focused on how two regions talk to each other, but the brain actually works through more complex three-way interactions. Researchers developed a method to map these "triadic" connections—statistical relationships among groups of three brain regions—and found they reveal distinct organizational patterns that simple pairwise analysis misses, providing richer detail about how the brain coordinates activity during rest and active tasks.
Current brain imaging analysis might be throwing away crucial information about how cognition actually works. By capturing three-way interactions instead of just pairs, researchers can build more complete maps of brain organization, which could improve diagnosis of neurological conditions, refine understanding of how thoughts and behaviors emerge from neural activity, and provide a more accurate foundation for future brain-computer interfaces and treatments.