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The Adventures of Fundi Intervention Based on the Cognitive and Emotional Processing in Attention Deficit Hyperactive Disorder Patients
Published on: June 12, 2020
Hierarchical integrated and segregated processing in the functional brain default mode network within
Yongchen Fan1,2, Rong Wang3, Pan Lin4
1State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an, China.
Attention-deficit/hyperactivity disorder (ADHD) is linked to abnormal brain network organization. This study reveals altered hierarchical functional integration and segregation in the default mode network (DMN) in ADHD patients, impacting cognitive function.
Area of Science:
- Neuroscience
- Cognitive Neuroscience
- Systems Neuroscience
Background:
- Hierarchical modular organization of brain functional networks is vital for cognitive functions.
- Disruptions in this organization are linked to various brain disorders.
- The default mode network (DMN) plays a key role in specialized cognition and is implicated in clinical conditions.
Purpose of the Study:
- To investigate the hypothesis of abnormal hierarchical functional segregation and integration of the DMN in attention-deficit/hyperactivity disorder (ADHD).
- To examine topological metrics of segregation and integration within DMN subnetworks in ADHD patients compared to healthy controls.
Main Methods:
- Analysis of topological metrics for functional segregation and integration within hierarchical subnetworks of the DMN.
- Comparison of these metrics between individuals with ADHD and healthy controls.
- Investigation of dynamic transitions between functional segregation and integration states.
Main Results:
- Patients with ADHD exhibited decreased hierarchical functional integration and increased segregation within the DMN.
- Abnormalities in the DMN were attributed to changes in functional segregation and integration in higher-level subnetworks.
- ADHD patients showed reduced adaptive reorganization ability between brain network states, indicating impaired regulation.
Conclusions:
- The findings support the hypothesis of abnormal hierarchical functional organization of the DMN in ADHD.
- Dysfunctional brain cognitive functions in ADHD are linked to altered network segregation and integration.
- These results highlight the importance of studying hierarchical network dynamics for understanding ADHD pathophysiology.
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