The Speed of Visual Attention and Motor-Response Decisions in Adult Attention-Deficit/Hyperactivity Disorder

Biological Psychiatry
Fernando Cross-VillasanaThomas Töllner

Abstract

Adults with attention-deficit/hyperactivity disorder (ADHD) exhibit slowed reaction times (RTs) in various attention tasks. The exact origins of this slowing, however, have not been established. Potential candidates are early sensory processes mediating the deployment of focal attention, stimulus response translation processes deciding upon the appropriate motor response, and motor processes generating the response. We combined mental chronometry (RT) measures of adult ADHD (n = 15) and healthy control (n = 15) participants with their lateralized event-related potentials during the performance of a visual search task to differentiate potential sources of slowing at separable levels of processing: the posterior contralateral negativity (PCN) was used to index focal-attentional selection times, while the lateralized readiness potentials synchronized to stimulus and response events were used to index the times taken for response selection and production, respectively. To assess the clinical relevance of event-related potentials, a correlation analysis between neural measures and subjective current and retrospective ADHD symptom ratings was performed. ADHD patients exhibited slower RTs than control participants, which were accompan...Continue Reading

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Citations

Mar 15, 2016·Neuropsychologia·Iris WiegandKathrin Finke
Oct 21, 2016·Experimental Brain Research·Kristina A NeelyCynthia L Huang-Pollock
May 16, 2018·Developmental Science·Meirong SunYan Song
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Dec 24, 2020·Journal of Neural Transmission·Nana GuoOliver Tucha
Sep 3, 2021·PloS One·Saleh M H MohamedOliver Tucha

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