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Methylphenidate Enhances Working Memory by Modulating Discrete Frontal and Parietal Lobe Regions in the Human Brain
Open accessAbstract
The indirect catecholamine agonist methylphenidate (Ritalin) is the drug treatment of choice in attention deficit/hyperactivity disorder (AD/HD), one of the most common behavioral disorders of childhood (DSM-IV), although symptoms may persist into adulthood. Methylphenidate can enhance cognitive performance in adults and children diagnosed with AD/HD (Kempton et al., 1999; Riordan et al., 1999) and also in normal human volunteers on tasks sensitive to frontal lobe damage, including aspects of spatial working memory (SWM) performance (Elliott et al., 1997). The present study investigated changes in regional cerebral blood flow (rCBF) induced by methylphenidate during performance of a self-ordered SWM task to define the neuroanatomical loci of the beneficial effect of the drug. The results show that the methylphenidate-induced improvements in working memory performance occur with task-related reductions in rCBF in the dorsolateral prefrontal cortex and posterior parietal cortex. The beneficial effects of methylphenidate on working memory were greatest in the subjects with lower baseline working memory capacity. This is to our knowledge the first demonstration of a localization of a drug-induced improvement in SWM performance in humans and has relevance for understanding the treatment of AD/HD.
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“Indeed, imaging studies have shown that methylphenidate enhances the efficiency of PFC activity both in healthy college students (Mehta et al., 2000) and in subjects with ADHD (Bush et al., 2008).”
From Catecholamine influences on prefrontal cortical function: Relevance to treatment of attention deficit/hyperactivity disorder and related disorders (2011) · cites this paper as Mehta et al., 2000
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“Research additionally shows that ADHD is associated with decreased activity in frontal brain areas and increased activity in posterior (parietal and occipital) brain areas (Durston, 2003), and that MPH affects not only frontal but also posterior areas (Mehta et al., 2000).”
From Implementation Intentions Facilitate Response Inhibition in Children with ADHD (2008) · cites this paper as Mehta et al., 2000
In the citing paper
“Based on accumulating evidence that effects of methylphenidate and related drugs on cognition are baseline performance-dependent (Kimberg et al., 1997; Mattay et al., 2000; Mehta et al., 2000; Gibbs and D’Esposito, 2005; Tipper et al., 2005; Finke et al., 2010), changes in sustained attention following methylphenidate were assessed as a function of baseline A’ scores, independent of group.”
From A positron emission tomography study of nigro-striatal dopaminergic mechanisms underlying attention: implications for ADHD and its treatment (2013) · cites this paper as Mehta et al., 2000
In the citing paper
“The effects of methylphenidate and related stimulant drugs in healthy individuals have been shown to be baseline-dependent; i.e. those subjects with relatively low performance levels exhibit greater benefit after the drug (Naylor et al., 1985; Rogers et al., 1999; Mehta et al., 2000; Turner et al., 2003; Clatworthy et al., 2009).”
From A positron emission tomography study of nigro-striatal dopaminergic mechanisms underlying attention: implications for ADHD and its treatment (2013) · cites this paper as Mehta et al., 2000
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Metadata
- Authors
- Mehta, M. A., Owen, A. M., Sahakian, B. J., Mavaddat, N., Pickard, J. D., & Robbins, T. W.
- Affiliations
- University of Cambridge (GB)
- MRC Cognition and Brain Sciences Unit (GB)
- Addenbrooke's Hospital (GB)
- ORCID
- Venue
- The Journal of Neuroscience
- Publisher
- Society for Neuroscience
- Published
- 2000-03-15
- Volume
- 20
- Issue
- 6
- Pages
- RC65-RC65
- ISSN
- 0270-6474 (ISSN-L)
- 1529-2401
- PMC
- PMC6772505
- OpenAlex
- W2170595219
- Cited by
- 608
- References
- 31
- Citations by year
- 2026: 7 · 2025: 9 · 2024: 16 · 2023: 8 · 2022: 9 · 2021: 14 · 2020: 26 · 2019: 21 · 2018: 13 · 2017: 15 · 2016: 27 · 2015: 29 · 2014: 26 · 2013: 34 · 2012: 42
- FWCI
- 11.63
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Research Portal (King's College London) (submittedVersion)
- Funders
- Wellcome Trust
- Medical Research Council
- 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
- methylphenidate, working memory, spatial working memory, attention deficit hyperactivity disorder, regional cerebral blood flow, dorsolateral prefrontal cortex, posterior parietal cortex, catecholamine agonists, working memory capacity
- MeSH terms
- Adult, Central Nervous System Stimulants, Cerebrovascular Circulation, Frontal Lobe, Humans, Functional Laterality, Male, Memory, Short-Term, Methylphenidate, Parietal Lobe, Tomography, Emission-Computed, Adrenergic Uptake Inhibitors, Dopamine Uptake Inhibitors
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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