[Neurofunctional differences in the P300 frequency for multi-sensory stimulation in kids with attention deficit
Angélica M Soria-Claros, Isabel Serrano, Anahi Serra
1Universidad Complutense de Madrid. Facultad de Medicina, 28040 Madrid, Espana.
Insights
Children with Attention Deficit/Hyperactivity Disorder (ADHD) show increased brain activity in visual and auditory processing, but not tactile, according to P300 component analysis. Error rates were also higher in the ADHD group.
Area of Science:
- Neuroscience
- Developmental Psychology
- Cognitive Science
Background:
- Attention Deficit/Hyperactivity Disorder (ADHD) is a neurodevelopmental disorder characterized by inattention, hyperactivity, and impulsivity.
- The P300 event-related potential is a neurophysiological marker used to study cognitive processing, showing potential in differentiating ADHD subjects, though results are not conclusive.
Purpose of the Study:
- To investigate brain information processing using the P300 component across auditory, visual, and tactile modalities in children diagnosed with ADHD.
- To compare P300 characteristics and error rates between children with ADHD and a control group.
Main Methods:
- The study recorded P300 components (auditory, visual, tactile) in 17 children with ADHD (aged 7-10) and 15 age-matched controls.
- Participants included children with combined and inattentive subtypes of ADHD.
Main Results:
- Children with ADHD exhibited a significant increase in the latency of the visual P300 wave.
- Increased cortical areas associated with the P300 component were observed in children with ADHD during visual and auditory tasks.
- While reaction times showed trends, they were not statistically significant across all modalities; however, error rates were higher in the ADHD group.
Conclusions:
- The findings support the hypothesis of altered brain activity, specifically increased cortical areas, during visual and auditory sensory processing in children with ADHD.
- Tactile stimulation appears to elicit a different neural response pattern compared to visual and auditory stimuli in the ADHD group.
Introduction:
Attention deficit/hyperactivity disorder (ADHD) is characterized by inattention, motor hyperactivity, impulsivity, or a combination of all. The P300 is a non-invasive neurophysiological that has shown its effectiveness to detect differences between subjects with ADHD but results are not yet conclusive.
Aim:
To assess brain information processing by the P300 component, auditory, visual and tactile modality in children with ADHD.
Subjects And Methods:
The P300 components auditory, visual and tactile 17 children with ADHD (11 combined and 7 in-attentive) and 15 control children aged between 7 and 10 years were recorded.
Results:
In response reaction times found a more pronounced trend in the auditory and visual time but not statistically significant in any of the three responses. In the error rate increased in children with ADHD compared to the control group. Children with ADHD have a significant increase in latency of visual P300 wave while there is no significant decrease in tactile and auditory P300. We found increased cortical areas in the P300 component in children with ADHD during visual and auditory test, but not touch.
Conclusions:
Our results support the hypothesis of the existence of increased brain areas during auditory and visual sensory processing in ADHD group, except for tactile stimulation happens otherwise.
