[Cerebral inhibitory functioning in patients with attention deficit/hyperactivity disorder. I. Analysis of
Yuki Inoue1, Masumi Inagaki, Atsuko Gunji
1Department of Developmental Disorder, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Tokyo.
Insights
Children with attention deficit/hyperactivity disorder (AD/HD) and pervasive developmental disorder (PDD) show altered non-target-P300 event-related potentials. These findings suggest abnormalities in inhibitory processing related to AD/HD behavior.
Area of Science:
- Neuroscience
- Developmental Psychology
- Cognitive Electrophysiology
Context:
- Investigating cerebral inhibitory function in children is crucial for understanding developmental disorders.
- Attention Deficit/Hyperactivity Disorder (AD/HD) and Pervasive Developmental Disorder (PDD) are neurodevelopmental conditions impacting cognitive processes.
- Event-Related Potentials (ERPs), specifically the P300 component, offer insights into neural processing.
Purpose:
- To evaluate cerebral inhibitory function in children diagnosed with AD/HD and PDD.
- To analyze target and non-target P300 ERPs using a visual oddball paradigm.
- To compare ERP findings between children with AD/HD, PDD, and healthy controls.
Summary:
- The study analyzed P300 ERPs in 30 children (10 AD/HD, 10 PDD, 10 healthy controls) during a visual oddball task.
- No significant differences in target-P300 amplitude or latency were found across groups.
- Children with AD/HD exhibited reduced non-target-P300 amplitudes at Cz, while PDD group showed shorter non-target-P300 latency at Oz.
Impact:
- Non-target-P300 components in visual oddball tasks may reflect brain inhibitory processing.
- Abnormalities in non-target-P300 potentials are potentially linked to AD/HD behaviors.
- This research contributes to understanding the neurophysiological underpinnings of developmental disorders.
Abstract:
The present study was organized to evaluate the cerebral inhibitory function in children with developmental disorders such as attention deficit/hyperactivity disorder (AD/HD) and pervasive developmental disorder (PDD). Target and non-target-P300 event related potential (ERP) in response to stimuli of a visual oddball paradigm was analyzed. Ten children with AD/HD, 10 children with PDD and 10 healthy children were included in the study participants. Target-P300 component was observed in all subjects, which showed predominant amplitudes in Pz electrode. No significant differences were observed in amplitude and latency of target-P300 among three groups. In healthy children, Non-target-P300 component was observed mainly in Cz and Pz electrodes, while children with AD/HD had significantly reduced amplitudes of the component at Cz and children with PDD showed shorter latency at Oz. These results suggest that Non-target-P300 component in visual oddball paradigm possibly reflects the brain function associated with inhibitory processing and there is a relationship between the non-target-P300 potential abnormality and the AD/HD behavior.
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