Cited by 39Attention Deficit Hyperactivity DisorderNeural and Behavioral Psychology StudiesNeurotransmitter Receptor Influence on Behavior

Functional imaging changes in the medial prefrontal cortex in adult ADHD

Salavert, José, Ramos-Quiroga, Josep A., Moreno-Alcázar, Ana, Caseras, Xavier, Palomar, Gloria, Radua, Joaquim, Bosch, Rosa, Salvador, Raymond +3 more·2018·Journal of Attention Disorders

Abstract

OBJECTIVE: Functional imaging studies have found reduced frontal activity, mainly in dorso/ventro-lateral regions and reduced task-related de-activation of the default mode network in childhood ADHD. Adult studies are fewer and inconclusive. We aimed to investigate the potential neural bases of executive function in ADHD adults, examining brain activity during N-back task performance, and to explore the potential corrective effects of long-term methylphenidate treatment. METHOD: We recruited a large adult ADHD-combined sample and a matched control group and obtained functional magnetic resonance imaging (fMRI) images during task. ADHD participants were subdivided in a group under long-term treatment with methylphenidate (washed out for the scan) and a treatment-naive group. RESULTS: ADHD participants showed deficient de-activation of the medial prefrontal cortex during 2-back task, implying default mode network dysfunction. We found no relationship between blunted de-activation and treatment history. CONCLUSION: As de-activation failure in the medial frontal cortex is linked to lapses of attention, findings suggest a potential link to ADHD symptomatology.

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Crossref · 10.1177/1087054715611492

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  • Poor deactivation of the DMN during cognitive tasks is a typical feature of ADHD and may contribute to poor task performance and enhanced distractibility.

    “These findings of enhanced activation of DMN regions confirm recent evidence that poor deactivation of the DMN during cognitive tasks is a typical feature of ADHD and may contribute to poor task performance and enhanced distractibility (Fassbender et al., 2009; Christakou et al., 2013; Salavert et al., 2015).”
  • In parametric fMRI task designs, ADHD children and adults, unlike controls, do not progressively deactivate anterior (vmPFC) and/or posterior default mode regions (PPC) with increasing WM or attention load.

    “Thus, in parametric fMRI task designs, ADHD children and adults, unlike controls, do not progressively deactivate anterior (ventromedial prefrontal cortex, vmPFC) and/or posterior default mode regions (PPC) with increasing WM or attention load, respectively (Fassbender et al., 2009; Christakou et al., 2013; Salavert et al., 2015).”

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Authors
Salavert, J., Ramos-Quiroga, J. A., Moreno-Alcázar, A., Caseras, X., Palomar, G., Radua, J., Bosch, R., Salvador, R., McKenna, P. J., Casas, M., & Pomarol-Clotet, E.
Affiliations
  • FIDMAG Germanes Hospitalàries Research Foundation, Barcelona, Spain
  • Universitat Autònoma de Barcelona, Spain
  • Cardiff University (GB)
  • Universitat Autònoma de Barcelona (ES)
  • Centro de Investigación Biomédica en Red de Salud Mental (ES)
Venue
Journal of Attention Disorders
Published
2015-10-29
Volume
22
Issue
7
Pages
679-693
ISSN
  • 1087-0547 (ISSN-L)
  • 1557-1246
OpenAlex
W2339601202
Cited by
39
References
105
Citations by year
2026: 4 · 2025: 6 · 2024: 2 · 2023: 2 · 2022: 4 · 2021: 4 · 2020: 3 · 2019: 1 · 2018: 7 · 2017: 4 · 2016: 1 · 2015: 1
FWCI
3.52
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Attention Disorders (publishedVersion)
  • PubMed (publishedVersion)
  • ORCA Online Research @Cardiff (Cardiff University) (submittedVersion)
Funders
  • Instituto de Salud Carlos III (CM11/00024, CP10/00596, PI11/01766)
  • Catalonian Government (2009SGR211)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
adult ADHD, medial prefrontal cortex, default mode network, neural deactivation, executive function, n-back task, attention deficits, brain activity
MeSH terms
Adult, Central Nervous System Stimulants, Attention, Attention Deficit Disorder with Hyperactivity, Brain Diseases, Brain Mapping, Evoked Potentials, Female, Humans, Magnetic Resonance Imaging, Male, Methylphenidate, Task Performance and Analysis, Prefrontal Cortex, Executive Function

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