Neural Dynamics for Facilitating ADHD Diagnosis in Preschoolers: Central and Parietal Delta Synchronization in the
Insights
Early intervention for attention-deficit/hyperactivity disorder (ADHD) in preschoolers is supported by EEG and CPT findings. Brain activity differences in ADHD children during tasks aid in early diagnosis and educational program planning.
Area of Science:
- Neuroscience
- Developmental Psychology
- Pediatrics
Background:
- Attention-deficit/hyperactivity disorder (ADHD) diagnosis in preschoolers is challenging.
- Early intervention is crucial for improving outcomes in children with ADHD.
- Continuous Performance Tests (CPT) and electroencephalography (EEG) show promise in ADHD assessment.
Purpose of the Study:
- To characterize brain dynamics in preschool children at risk for ADHD using EEG during CPT tasks.
- To identify correlations between EEG measures and CPT performance in ADHD and typically developing (TD) children.
- To inform early intervention strategies for preschoolers with ADHD.
Main Methods:
- Simultaneous wireless wearable EEG and Conners Kiddie Continuous Performance Test (K-CPT) recordings were used.
- Forty-nine preschool children (29 ADHD, 20 TD) participated.
- Brain dynamics were measured at slow and fast task rates during the CPT.
Main Results:
- Significant differences in task-related EEG spectral powers (delta, P < 0.01) were found between ADHD and TD groups, specifically in the slow-rate task.
- A decrease in overall alpha power was observed in the ADHD group when shifting from rest to the CPT task.
- Delta powers positively correlated with CPT perseveration, while alpha powers negatively correlated with perseveration and detectability scores (P < 0.05).
Conclusions:
- Task-related EEG spectral power differences, particularly delta activity during slow tasks, can help differentiate preschoolers with ADHD.
- EEG-CPT correlations provide insights into the neural underpinnings of attention deficits in young children.
- These findings support the use of EEG and CPT in early ADHD identification and the development of targeted intervention programs.
Abstract:
The present study aimed to characterize children at risk of attention-deficit/hyperactivity disorder (ADHD) during preschool age and provide early intervention. The continuous performance test (CPT) and electroencephalography (EEG) can contribute additional valuable information to facilitate diagnosis. This study measured brain dynamics at slow and fast task rates in the CPT using a wireless wearable EEG and identified correlations between the EEG and CPT data in preschool children with ADHD. Forty-nine preschool children participated in this study, of which 29 were diagnosed with ADHD and 20 exhibited typical development (TD). The Conners Kiddie Continuous Performance Test (K-CPT) and wireless wearable EEG recordings were employed simultaneously. Significant differences were observed between the groups with ADHD and TD in task-related EEG spectral powers (central as well as parietal delta, P < 0.01), which were distinct only in the slow-rate task condition. A shift from resting to the CPT task condition induced overall alpha powers decrease in the ADHD group. In the task condition, the delta powers were positively correlated with the CPT perseveration scores, whereas the alpha powers were negatively correlated with specific CPT scores mainly on perseveration and detectability (P < 0.05). These results, which complement the findings of other sparse studies that have investigated within-task-related brain dynamics, particularly in preschool children, can assist specialists working in early intervention to plan training and educational programs for preschoolers with ADHD.
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