Reliability of variability and complexity measures for task and task-free BOLD fMRI.

ABSTRACT: Brain activity continuously fluctuates over time, even if the brain is in controlled (e.g., experimentally induced) states. Recent years have seen an increasing interest in understanding the complexity of these temporal variations, for example with respect to developmental changes in brain function or between-person differences in healthy and clinical populations. However, the psychometric reliability of brain signal variability and complexity measures-which is an important precondition for robust individual differences as well as longitudinal research-is not yet sufficiently studied. We examined reliability (split-half correlations) and test-retest correlations for task-free (resting-state) BOLD fMRI as well as split-half correlations for seven functional task data sets from the Human Con

SUBMITTER: Wehrheim MH 

PROVIDER: S-EPMC11232465 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature