AI Article Synopsis
- The study examined 40 young adults with ADHD and 38 control participants using a reaction time task of varying difficulty.
- The ADHD/combined group showed less accuracy and more reaction variability, while the ADHD/inattentive group was slower and had smaller early lateralized readiness potentials (LRPs).
- Both ADHD subtypes demonstrated diminished LRPs for no-go stimuli, indicating weaker response preparation compared to controls, especially in those with the combined subtype.
Article Abstract
We studied 40 young adults with attention-deficit/hyperactivity disorder (ADHD; 18 predominantly inattentive type, 22 combined type) and 38 demographically comparable controls in a go/no-go choice reaction time task with 2 levels of difficulty. The ADHD/combined group was less accurate and had more variable reactions than controls. The ADHD/inattentive sample was slower than controls and had smaller early lateralized readiness potentials (LRPs). Compared with controls, both subtypes had (a) smaller early LRPs for no-go stimuli and (b) relatively earlier LRP onsets for difficult no-go events. The ADHD/combined sample also had smaller late LRP waves than controls. The results suggest that adults with ADHD, particularly those with the combined subtype, exhibit weaker central preparation to respond to both stimuli requiring a motor response and those prompting response inhibition.
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| http://dx.doi.org/10.1037/a0033992 | DOI Listing |
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