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Brain synchronizability, a false friend.

08:00 EDT 12th April 2019 | BioPortfolio

Summary of "Brain synchronizability, a false friend."

Synchronization plays a fundamental role in healthy cognitive and motor function. Two issues are still poorly understood. First, how synchronization depends on the interplay between local dynamics, coupling and topology? Second, how prone to synchronization a network is, given its topological organization? To investigate the synchronizability of both anatomical and functional brain networks various studies resorted to the Master Stability Function (MSF) formalism, an elegant tool which allows analysing the stability of synchronous states in a dynamical system consisting of many coupled oscillators. Here, we argue that brain dynamics does not fulfil the formal criteria under which synchronizability is usually quantified and, perhaps more importantly, this measure refers to a global dynamical condition that never holds in the brain (not even in the most pathological conditions), and therefore no neurophysiological conclusions should be drawn based on it. We discuss the meaning of synchronizability and its applicability to neuroscience and propose alternative ways to quantify brain networks synchronization.

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This article was published in the following journal.

Name: NeuroImage
ISSN: 1095-9572
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