Yi‐yuan Tang

2 papers in the library · 29 citations · publishing 2022-2024

Papers

Default mode network mediates low‐frequency fluctuations in brain activity and behavior during sustained attention

Human Brain Mapping July 29, 2022 Hang Zhang, Shiyou Yang, Yang Qiao et al. 27 citations

Spontaneous low-frequency fluctuations in sustained attention, which cause cognitive and behavioral lapses, originate in the default-mode network (DMN). Analysis of two independent fMRI and behavior datasets shows that neural fluctuations in the DMN mediate behavioral reaction-time fluctuations during sustained attention. The DMN's increased amplitude of fluctuation correlates with behavioral fluctuation specifically in the 0.01-0.1 Hz frequency range, not at lower or higher frequencies. This pattern appears during both auditory and visual sustained attention and replicates across datasets. These findings reveal the DMN as a neural source of attention fluctuation, extending the former view that the DMN is simply deactivated during cognitive tasks.

DOI: 10.1002/hbm.26024 Default mode network Neuroscience Cognition Neural activity +3

ENIGMA-Meditation: Worldwide consortium for neuroscientific investigations of meditation practices

April 8, 2024 Saampras Ganesan, Aki Tsuchiyagaito, Greg J. Siegle et al. 2 citations preprint

Meditation practices, which have been adapted into manualized interventions for conditions like depression, pain, addiction, and anxiety, show therapeutic promise, but their neuroscientific basis remains unclear. Current neuroimaging studies rely on small, heterogeneous datasets that vary in practice types, participant experience, clinical targets, and imaging methods, limiting generalizability and replicability. To address this, the ENIGMA-Meditation consortium was formed as a global collaboration to conduct systematic meta- and mega-analyses of distributed neuroimaging data using standardized methods. This framework aims to improve statistical power and rigorously characterize the neural mechanisms underlying meditation's effects on psychological and cognitive attributes, advancing the field of contemplative neuroscience.

DOI: 10.31234/osf.io/f2rvx Meditation Psychology Psychotherapist Philosophy +1