Regional Hurst Exponent Reflects Impulsivity-Related Alterations in Fronto-Hippocampal Pathways Within the Waiting Impulsivity Network.

ABSTRACT: In general, the Hurst exponent. is used as a measure of long-term memory of time series. In previous neuroimaging studies, H has been introduced as one important parameter to define resting-state networks, reflecting upon global scale-free properties emerging from a network. H has been examined in the waiting impulsivity (WI) network in an earlier study. We found that alterations of H in the anterior cingulate cortex (H ^{A C C} ) and the nucleus accumbens (H ^{N A c c} ) were lower in high impulsive (highIMP) compared to low impulsive (lowIMP) participants. Following up on those findings, we addressed the relation between altered fractality in H ^{A C C}

SUBMITTER: Neufang S 

PROVIDER: S-EPMC7381286 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature