Are you thinking what I'm thinking? Synchronization of resting fMRI time-series across subjects.

ABSTRACT: We describe BrainSync, an orthogonal transform that allows direct comparison of resting fMRI (rfMRI) time-series across subjects. For this purpose, we exploit the geometry of the rfMRI signal space to propose a novel orthogonal transformation that synchronizes rfMRI time-series across sessions and subjects. When synchronized, rfMRI signals become approximately equal at homologous locations across subjects. The method is based on the observation that rfMRI data exhibit similar connectivity patterns across subjects, as reflected in the pairwise correlations between different brain regions. We show that if the data for two subjects have similar correlation patterns then their time courses can be approximately synchronized by an orthogonal transformation. This transform is unique, invertible,

SUBMITTER: Joshi AA 

PROVIDER: S-EPMC6338442 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature