Principle of Structural Equation Modeling for Exploring Functional Interactivity within a Putative Network of Interconnected Brain Areas

Giovanni de Marco (1) , Pierre Vrignaud (2) , Christophe Destrieux (3) , Damien De Marco , Sylvie Testelin , Bernard Devauchelle , Patrick Berquin (4)

1 UPJV - Université de Picardie Jules Verne
2 UPN - Université Paris Nanterre
3 Service de neuroradiologie [Tours]
4 Service de neuropédiatrie

Functional neuroimaging first allowed researchers to describe the functional segregation of regionally activated areas during a variety of experimental tasks. More recently, functional integration studies have described how these functionally specialized areas, interact within a highly distributed neural network. When applied to the field of neurosciences, structural equation modeling (SEM) uses theoretical and/or empirical hypotheses to estimate the effects of an experimental task within a putative network. SEM represents a linear technique for multivariate analysis of neuroimaging data and has been developed to simultaneously examine ratios of multiple causality in an experimental design; the method attempts to explain a covariance structure within an anatomical constrained model. This method, when combined with the concept of effective connectivity, can provide information on the strength and direction of the functional interactions that take place between identified brain regions of a putative network.

Mots clés: Model; Integration; Network; Effective connectivity; SEM

Domaines: Biomécanique [physics.med-ph]; Physiologie [q-bio.TO]; Imagerie

Giovanni de Marco, Pierre Vrignaud, Christophe Destrieux, Damien De Marco, Sylvie Testelin, et al.. Principle of Structural Equation Modeling for Exploring Functional Interactivity within a Putative Network of Interconnected Brain Areas. Magnetic Resonance Imaging, 2009, 27 (1), pp.1-12. ⟨10.1016/j.mri.2008.05.003⟩. ⟨hal-01469475⟩