Variation in the distribution of large-scale spatiotemporal patterns of activity across brain states.

ABSTRACT: A few large-scale spatiotemporal patterns of brain activity (quasiperiodic patterns or QPPs) account for most of the spatial structure observed in resting state functional magnetic resonance imaging (rs-fMRI). The QPPs capture well-known features such as the evolution of the global signal and the alternating dominance of the default mode and task positive networks. These widespread patterns of activity have plausible ties to neuromodulatory input that mediates changes in nonlocalized processes, including arousal and attention. To determine whether QPPs exhibit variations across brain conditions, the relative magnitude and distribution of the three strongest QPPs were examined in two scenarios. First, in data from the Human Connectome Project, the relative incidence and magnitude of the QPP

SUBMITTER: Meyer-Baese L 

PROVIDER: S-EPMC11327057 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature