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Illustration of the proposed functional model of cortical gyri and sulci. Gyri serve as the global functional connection centers that receive/send information between distant structurally-connected cortical regions via fibers (black curves in gray ribbon). Sulci directly exchange information with their neighboring gyri through inter-column cortico-cortical fibers (yellow curves) and indirectly communicate with remote cortical regions via gyri that are connected by dense fibers.
