Objective: While there is converging evidence of abnormal brain connectivity in autism, there has been little examination of how this connectivity varies across time, a measure known as dynamic functional connectivity (DFC). A recent study reported altered DFC of specific networks in autism, but no study has examined DFC at the whole-brain level. In this study, we examine how whole-brain connectivity varies across time in autism. Method: Resting-state fMRI data was obtained from Autism Brain Imaging Data Exchange (ABIDE). Analyses included 556 control participants (17.53±7.63 years) and 432 participants with autism (17.27±7.82 years). Data were preprocessed using Data Processing Assistant for Resting-State fMRI (DPARSF); global signal regression and deconvolution were performed. Time courses were extracted from 200 regions. DFC analyses were performed using a variable, sliding-window technique, and variance of DFC was computed....

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