RT Journal Article
SR Electronic
T1 Identification of Optimal Structural Connectivity Using Functional Connectivity and Neural Modeling
JF The Journal of Neuroscience
JO J. Neurosci.
FD Society for Neuroscience
SP 7910
OP 7916
DO 10.1523/JNEUROSCI.4423-13.2014
VO 34
IS 23
A1 Deco, Gustavo
A1 McIntosh, Anthony R.
A1 Shen, Kelly
A1 Hutchison, R. Matthew
A1 Menon, Ravi S.
A1 Everling, Stefan
A1 Hagmann, Patric
A1 Jirsa, Viktor K.
YR 2014
UL http://www.jneurosci.org/content/34/23/7910.abstract
AB 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.