Journal Article

Questions and controversies in the study of time-varying functional connectivity in resting fMRI

Lindquist, Martin A., Bassett, Danielle S., Liégeois, Raphaël, McIntosh, Anthony Randal, Vidaurre, Diego, Xie, Hua, Lurie, Daniel J., Razi, Adeel, Betzel, Richard F., Thompson, William Hedley, Kheilholz, Shella, Bielczyk, Natalia Z., Pasquini, Lorenzo, Kucyi, Aaron, Calhoun, Vince D., Shine, James M., Muthuraman, Muthuraman, Kraft, Dominik, Douw, Linda, Breakspear, Michael, Poldrack, Russell A., Kessler, Daniel, Miller, Robyn L.

2020

Overview

The brain is a complex, multiscale dynamical system composed of many interacting regions. Knowledge of the spatiotemporal organization of these interactions is critical for establishing a solid understanding of the brain’s functional architecture and the relationship between neural dynamics and cognition in health and disease. The possibility of studying these dynamics through careful analysis of neuroimaging data has catalyzed substantial interest in methods that estimate time-resolved fluctuations in functional connectivity (often referred to as “dynamic” or time-varying functional connectivity; TVFC). At the same time, debates have emerged regarding the application of TVFC analyses to resting fMRI data, and about the statistical validity, physiological origins, and cognitive and behavioral relevance of resting TVFC. These and other unresolved issues complicate interpretation of resting TVFC findings and limit the insights that can be gained from this promising new research area. This article brings together scientists with a variety of perspectives on resting TVFC to review the current literature in light of these issues. We introduce core concepts, define key terms, summarize controversies and open questions, and present a forward-looking perspective on how resting TVFC analyses can be rigorously and productively applied to investigate a wide range of questions in cognitive and systems neuroscience.

• Publisher: MIT Press,MIT Press Journals, The,The MIT Press
• Subject: Brain / Brain architecture / Brain dynamics / Brain mapping / Brain networks / Cognition / Cognitive ability / Dynamical systems / fMRI / Functional connectivity / Functional magnetic resonance imaging / Image processing / Literature reviews / Medical imaging / Neural networks / Neuroimaging / Questions / Rest / Review