Cited by 63Attention Deficit Hyperactivity DisorderNeurotransmitter Receptor Influence on BehaviorNeural and Behavioral Psychology Studies

Methylphenidate and atomoxetine normalise fronto-parietal underactivation during sustained attention in ADHD adolescents

Kowalczyk, Olivia S, Cubillo, Ana I, Smith, Anna, Barrett, Nadia, Giampietro, Vincent, Brammer, Michael, Simmons, Andrew, Rubia, Katya·2019·European Neuropsychopharmacology

Abstract

Problems with sustained attention are a key clinical feature of Attention Deficit/Hyperactivity Disorder (ADHD) which also manifests in poor performance and abnormal fronto-striato-parietal activation during sustained attention. Methylphenidate and atomoxetine improve attention functions and upregulate abnormal fronto-cortical activation during executive function tasks in ADHD patients. Despite this, no functional Magnetic Resonance Imaging (fMRI) study has compared the effects of methylphenidate and atomoxetine on the neurofunctional substrates of sustained attention in ADHD. This randomised, double-blind, placebo-controlled, cross-over study investigated the comparative normalisation effects of methylphenidate and atomoxetine on fMRI correlates and performance in 14 ADHD adolescents relative to 27 age-matched healthy controls during a parametric sustained attention/vigilance task with progressively increasing load of sustained attention. ADHD patients were scanned three times under a single clinical dose of either methylphenidate, atomoxetine, or placebo in pseudo-randomised order. Healthy controls were scanned once and compared to patients under each drug condition to test for potential drug-normalisation effects. Relative to controls, ADHD boys under placebo were impaired in performance and had underactivation in predominantly right-hemispheric fronto-parietal, and striato-thalamic regions. Both drugs normalised all underactivations, while only methylphenidate improved pe…

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Crossref · 10.1016/j.euroneuro.2019.07.139

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  • In the authors' four fMRI studies comparing single dosages of methylphenidate and atomoxetine versus placebo on brain activation in children and adolescents with ADHD, reduced activation in frontal, parietal, temporal, and insular-striatal regions during cognitive tasks can be increased (and even normalized) by both stimulant and non-stimulant medications.

    “Thus, in our four fMRI studies comparing the effects of single dosages of methylphenidate and atomoxetine versus placebo on brain activation in children and adolescents with ADHD (45, 85–87), we found that reduced activation in frontal, parietal, temporal, and insular-striatal regions during cognitive tasks can be increased (and even normalized) by both stimulant and non-stimulant medications.”

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Authors
Kowalczyk, O. S., Cubillo, A. I., Smith, A., Barrett, N., Giampietro, V., Brammer, M., Simmons, A., & Rubia, K.
Affiliations
King's College London (GB)
Corresponding author
Kowalczyk, Olivia S
Venue
European Neuropsychopharmacology
Publisher
Elsevier BV
Published
2019-10
Volume
29
Issue
10
Pages
1102-1116
ISSN
0924-977X (ISSN-L)
OpenAlex
W2966093564
Cited by
63
References
21
Citations by year
2026: 5 · 2025: 14 · 2024: 12 · 2023: 7 · 2022: 11 · 2021: 7 · 2020: 6 · 2019: 1
FWCI
5.00
Type
journal article
Language
en
Open access
closed
Locations
  • European Neuropsychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
  • Research Portal (King's College London) (submittedVersion)
Funders
National Institute for Health Research
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
methylphenidate, atomoxetine, attention deficit hyperactivity disorder, sustained attention, adolescents, executive function, ventrolateral prefrontal cortex, temporal cortex, posterior cingulate cortex, precuneus, stimulant medication effects
MeSH terms
Atomoxetine Hydrochloride, Adolescent, Central Nervous System Stimulants, Attention, Attention Deficit Disorder with Hyperactivity, Brain, Child, Double-Blind Method, Humans, Magnetic Resonance Imaging, Male, Methylphenidate, Neural Pathways, Neuropsychological Tests, Cross-Over Studies, Adrenergic Uptake Inhibitors, Functional Neuroimaging

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