Evidence map›Paper›PMID 20352415›Full record

Trial reportPsychopharmacology2010

Effects of modafinil and methylphenidate on visual attention capacity: a TVA-based study.

Kathrin Finke, Chris M Dodds, Peter Bublak, Ralf Regenthal, Frank Baumann, Tom Manly, Ulrich Müller

Abstract readComparative StudyRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Psychopharmacology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 1 pooled it
5.8field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

52 citing papers in PubMed, 1 synthesis or guideline pooled it, 117 citations in OpenAlex.

  1. Pooled it
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  9. Working memory capacity predicts effects of methylphenidate on reversal learning.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2013
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  14. Effect of modafinil on learning and task-related brain activity in methamphetamine-dependent and healthy individuals.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2011
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  17. Observational
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 5 institutions in 2 countries.

Kathrin FinkeDepartment of Psychology, Experimental Psychology, Ludwig Maximilian University, Munich, Germany. finke@psy.uni-muenchen.de
Chris M Dodds
Peter Bublak
Ralf Regenthal
Frank Baumann
Tom Manly
Ulrich Müller
Leipzig University · DEUniversity of Cambridge · GBFriedrich Schiller University Jena · DELudwig-Maximilians-Universität München · DEMRC Cognition and Brain Sciences Unit · GB

Funding

Medical Research Council G0401099Medical Research Council MC_U105559837
6 · The paper itself

Abstract

introductionTheory of visual attention (TVA; Bundesen 1990) whole report tasks allow the independent measurement of visual perceptual processing speed and visual short-term memory (vSTM) storage capacity, unconfounded by motor speed. This study investigates how cognitive enhancing effects of psychostimulants depend on baseline performance and individual plasma levels. MATERIALS AND

methodsEighteen healthy volunteers (aged 20-35 years) received single oral doses of either 40 mg methylphenidate, 400 mg modafinil or placebo in a counterbalanced, double-blind crossover design. A whole report of visually presented letter arrays was performed 2.5-3.5 h after drug administration, and blood samples for plasma level analysis were taken.

resultsMethylphenidate and modafinil both enhanced perceptual processing speed in participants with low baseline (placebo) performance. These improvements correlated with subjective alertness. Furthermore, we observed differential plasma level-dependent effects of methylphenidate in lower and higher performing participants: higher plasma levels led to a greater improvement in low-performing participants and to decreasing improvement in high-performing participants. Modafinil enhanced visual short-term memory storage capacity in low-performing participants.

conclusionsThis is the first pharmacological investigation demonstrating the usefulness of a TVA task for high-resolution and repeated cognitive parameter estimation after cognitive-enhancing medication. Our results confirm previous findings of attentional capacity improvements in low performers and extend the baseline dependency model to methylphenidate. Plasma level-dependent effects of psychostimulants can be modelled on an inverted U-shaped dose-response relationship, which is highly relevant to predict cognitive enhancing and detrimental effects of psychostimulants in patients with cognitive deficits (e.g., attention deficit hyperactivity disorder) and healthy volunteers (e.g., self-medicating academics).

Indexed as

AdultAttentionBenzhydryl CompoundsCross-Over StudiesDouble-Blind MethodFemaleHumansMaleMethylphenidateModafinilPhotic StimulationPsychomotor PerformanceReaction TimeVisual PerceptionYoung AdultBenzhydryl CompoundsMethylphenidateModafinil

Identifiers

PMID20352415
OpenAlexW2133468657

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.