Abstract
Executive function and working memory deficits are not only present in ADHD, but also in reading disorder (RD). Here, high-density ERPs were recorded during the Stop Signal Task in 53 children and adolescents: An ADHD-combined type group, a group with RD, and a healthy control group. The ADHD-C group displayed unique abnormalities of the frontal N200. Both healthy controls and RD groups showed a success-related right frontal N200 modulation, which was absent in the ADHD group. Second, for Success Inhibition trials, the ADHD-C had smaller right frontal N200 waves relative to healthy controls, while the RD group did not. In contrast, NoGo-P3 abnormalities were present both in the ADHD-C and RD groups. Impaired early response inhibition mechanisms, indexed by the frontal N200, appear to be limited to ADHD-C. In contrast, deficits in later cognitive control and error monitoring mechanisms, indexed by the NoGo-P3, appear to be present in both conditions.
Original language | English (US) |
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Pages (from-to) | 228-237 |
Number of pages | 10 |
Journal | Brain and Cognition |
Volume | 72 |
Issue number | 2 |
DOIs | |
State | Published - Mar 2010 |
Keywords
- ADHD
- Event-related potentials
- Inhibitory control
- N200
- NoGo-P3
- Reading disorder
- Stop Signal Task
ASJC Scopus subject areas
- Experimental and Cognitive Psychology
- Neuropsychology and Physiological Psychology
- Developmental and Educational Psychology
- Arts and Humanities (miscellaneous)
- Cognitive Neuroscience