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Brain Functional Correlates of Intelligence Score in ADHD Based on EEG
Mohammad Rostami1,2, Farnaz Faridi2,3, Reza Khosrowabadi2
1Department of Psychology, Faculty of Psychology and Educational Sciences, Allameh Tabatabaie University, Tehran, Iran.
Intelligence in attention deficit hyperactive disorder (ADHD) subtypes shows dynamic brain activity patterns. Electroencephalography (EEG) reveals compensatory neural mechanisms in ADHD individuals maintaining normal IQ.
Area of Science:
- Neuroscience
- Cognitive Science
- Psychiatry
Background:
- Intelligence is linked to brain structure and function.
- Understanding brain-intelligence relationships in atypical development is crucial.
- Neurodevelopmental disorders may involve dynamic neural compensation.
Purpose of the Study:
- To investigate the neural correlates of IQ in attention deficit hyperactive disorder (ADHD) subtypes.
- To compare electroencephalography (EEG) patterns between ADHD individuals and healthy controls.
- To test the hypothesis of dynamic neural patterns compensating for deficits.
Main Methods:
- Recruited 63 ADHD subjects (combined, inattentive, hyperactive subtypes) and 46 healthy controls with normal IQ.
- Recorded resting-state EEG data.
- Assessed IQ using Raven's standard progressive matrices and analyzed EEG power in conventional frequency bands.
Main Results:
- The association between IQ and EEG power differs across ADHD subtypes and healthy controls.
- Topographical representations of IQ-EEG associations varied between groups.
- EEG signal power demonstrated distinct patterns related to IQ in ADHD.
Conclusions:
- Findings suggest compensatory mechanisms in ADHD.
- Altered regional oscillatory patterns may maintain normal IQ in ADHD.
- Neural correlates of intelligence are dynamic in neurodevelopmental disorders.
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