Infra-slow scale-free dynamics modulate the connection of neural and behavioral variability during attention.

ABSTRACT: The activities of the human brain vary across different timescales, exhibiting scale-free dynamics. Previous research has highlighted the psychological and physiological significance of brain dynamical fluctuations across the Delta to Gamma bands. However, there has been less focus on infra-slow scale-free dynamics, e.g. power law exponent (PLE), and neural variability, e.g. standard deviation (SD), and sample entropy (SE), in mediating brain-behavior connection during attention. In this study, we recruited 49 participants and recorded functional magnetic resonance imaging (fMRI) resting-state and task data during a sustained attention task paradigm to investigate how the three measures-SD, SE, and PLE-modulate the dynamics of behavioral performance. Our findings demonstrate the following:

SUBMITTER: Ao Y 

PROVIDER: S-EPMC12267499 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature