Alpha Activity and Working Memory in Adults with ADHD
Author Information
Author(s): René Freichel, Nicolas Zink, Fang Yu Chang, Juan Diego Vera, Holly Truong, Giorgia Michelini, Sandra K. Loo, Agatha Lenartowicz
Primary Institution: University of Amsterdam
Hypothesis
Are ADHD-related working memory impairments present in adults?
Conclusion
Alpha activity during working memory processes normalizes in adulthood, but unique contributions suggest persistent cognitive deficits in adults with ADHD.
Supporting Evidence
- Individuals with ADHD showed slower response times and higher reaction-time variability.
- Alpha power during encoding was associated with inattention symptoms.
- Stronger alpha ERD was linked to better task accuracy at higher loads.
Takeaway
This study looked at how adults with ADHD use their brain while trying to remember things. It found that their brain activity is different from people without ADHD, even though they might seem okay.
Methodology
Electroencephalographic (EEG) data were collected from 85 adults with ADHD and 105 controls while performing working memory tasks.
Potential Biases
Potential bias due to the control group being first-degree relatives of children with ADHD.
Limitations
The study's control group may have undiagnosed ADHD-related risks, and the cross-sectional design limits causal inferences.
Participant Demographics
190 participants aged 32-64, including 85 with ADHD and 105 controls.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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