Functional Brain Network Abnormalities and Aripiprazole's Modulatory Effects in Pediatric Tic Disorder.

Area of Science:

• Neuroscience
• Clinical Neurology
• Pediatric Psychiatry

Background:

• Pediatric tic disorder (TD) is characterized by abnormal functional brain network activity.
• Understanding TD pathophysiology is crucial for developing effective treatments.

Purpose of the Study:

• Investigate functional brain network characteristics in pediatric TD patients.
• Evaluate the impact of aripiprazole treatment on brain networks in TD.

Main Methods:

• Resting-state electroencephalogram (EEG) recorded from TD patients and healthy controls.
• Functional connectivity analyzed using phase locking value (PLV).
• Graph theory applied to quantify global network topology.

Main Results:

• TD patients exhibited reduced frontal functional connectivity compared to controls.
• Aripiprazole treatment increased global connectivity, efficiency, and clustering, and shortened path length.
• Frontal hypo-connectivity persisted post-treatment in TD patients.

Conclusions:

• Pediatric TD involves frontal dysfunction with compensatory network adaptations.
• Aripiprazole modulates global brain network topology but does not normalize frontal deficits.
• Findings provide neurophysiological insights into TD and aripiprazole's mechanism.