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Table 2. 
Local DMN intersystem dynamic fluidity and range measures in subjects with ADHD and TD.
IN groupsNative spaceMeta-state space
Dwell timeFraction of timeState transitionsNumber of statesState switchingL1 SpanTotal L1 distance
DMN × task-positive control 0.337–0.867 0.829–0.986 0.769 0.602 0.602 0.467 0.831 
DMN × sensorimotor 0.149–0.793 0.974 0.353 0.424 0.402 0.345 0.166 
DMN × visual 0.281–0.912 0.988 0.521 0.459 0.466 0.712 0.666 
DMN × subcortical 0.108–0.888 0.820–0.964 0.155 0.509 0.550 0.079 0.311 
DMN × cognitive processing 0.186–0.852 0.333 0.910 0.618 0.664 0.510 0.912 
IN groupsNative spaceMeta-state space
Dwell timeFraction of timeState transitionsNumber of statesState switchingL1 SpanTotal L1 distance
DMN × task-positive control 0.337–0.867 0.829–0.986 0.769 0.602 0.602 0.467 0.831 
DMN × sensorimotor 0.149–0.793 0.974 0.353 0.424 0.402 0.345 0.166 
DMN × visual 0.281–0.912 0.988 0.521 0.459 0.466 0.712 0.666 
DMN × subcortical 0.108–0.888 0.820–0.964 0.155 0.509 0.550 0.079 0.311 
DMN × cognitive processing 0.186–0.852 0.333 0.910 0.618 0.664 0.510 0.912 

Note. Statistical significance level (p value or α value) is displayed for differences in ADHD > TD for each measure of fluid dynamism in the 5-cluster analyses for cross-system grouping between the DMN group and every other network group. All values represent two-sample t tests performed at p < 0.05 or α < 0.05, corrected for FDR. These values represent results after variance attributable to age was removed using the general linear model. All results replicated to the same level of significance in the 4-state and 6-state analyses with the exception of a significant difference in dwell time between the DMN and visual system in State 2 in the 4-state analysis. Dwell time and fraction of time values are shown in a range, indicating the lowest and highest bounds for each of the five states.

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