TY - JOUR T1 - Identification of Optimal Structural Connectivity Using Functional Connectivity and Neural Modeling JF - The Journal of Neuroscience JO - J. Neurosci. SP - 7910 LP - 7916 DO - 10.1523/JNEUROSCI.4423-13.2014 VL - 34 IS - 23 AU - Gustavo Deco AU - Anthony R. McIntosh AU - Kelly Shen AU - R. Matthew Hutchison AU - Ravi S. Menon AU - Stefan Everling AU - Patric Hagmann AU - Viktor K. Jirsa Y1 - 2014/06/04 UR - http://www.jneurosci.org/content/34/23/7910.abstract N2 - The complex network dynamics that arise from the interaction of the brain's structural and functional architectures give rise to mental function. Theoretical models demonstrate that the structure–function relation is maximal when the global network dynamics operate at a critical point of state transition. In the present work, we used a dynamic mean-field neural model to fit empirical structural connectivity (SC) and functional connectivity (FC) data acquired in humans and macaques and developed a new iterative-fitting algorithm to optimize the SC matrix based on the FC matrix. A dramatic improvement of the fitting of the matrices was obtained with the addition of a small number of anatomical links, particularly cross-hemispheric connections, and reweighting of existing connections. We suggest that the notion of a critical working point, where the structure–function interplay is maximal, may provide a new way to link behavior and cognition, and a new perspective to understand recovery of function in clinical conditions. ER -