ADHD and Very Low Frequency EEG Activity
Author Information
Author(s): Broyd Samantha J., Helps Suzannah K., Sonuga-Barke Edmund J. S.
Primary Institution: University of Southampton
Hypothesis
The study aims to examine patterns of VLF-EEG attention-induced deactivation by comparing VLF EEG at rest and during an attention task.
Conclusion
Attention-induced VLF EEG deactivations have intracranial sources that appear to overlap with those of the DMN and are related to ADHD symptom status.
Supporting Evidence
- Participants with high ADHD ratings showed significant attenuation of VLF EEG power in temporal lobes.
- Deactivations in medial prefrontal regions were significant in the low ADHD group but not in the high ADHD group.
- All participants performed the task with a high level of accuracy (M: 94.5%, SD: 5.1%).
- Attention-induced deactivation of VLF EEG power was observed across the whole sample.
Takeaway
The study looked at how brain activity changes when people with ADHD pay attention, finding that their brains work differently than those without ADHD.
Methodology
DC-EEG was recorded using an equidistant 66 channel electrode montage in 25 adult participants with high ADHD ratings and 25 with low ratings during rest and an attention task.
Potential Biases
The study relied on self-reported ADHD symptoms, which may introduce bias.
Limitations
Participants were all undergraduate psychology students, which may limit generalizability, and the task may not have been challenging enough for some participants.
Participant Demographics
Participants were first and second year undergraduate students, with 20 in the low ADHD group and 20 in the high ADHD group.
Statistical Information
P-Value
p=0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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