ReviewPharmacological reviews2014
Psychostimulants and cognition: a continuum of behavioral and cognitive activation.
Review in Pharmacological reviews, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 109 papers, 5 of them syntheses that pooled 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.
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.
Who cites it
109 citing papers in PubMed, 5 syntheses or guidelines pooled it, 255 citations in OpenAlex.
- A systematic review and meta-analysis of the acute effect of caffeine on attention.Psychopharmacology · 2025Pooled it
- MDMA and memory, addiction, and depression: dose-effect analysis.Psychopharmacology · 2022Pooled it
- Immediate-release methylphenidate for attention deficit hyperactivity disorder (ADHD) in adults.The Cochrane database of systematic reviews · 2021Pooled it
- Khat and neurobehavioral functions: A systematic review.PloS one · 2021Pooled it
- Cognitive Effects of MDMA in Laboratory Animals: A Systematic Review Focusing on Dose.Pharmacological reviews · 2019Pooled it
- Safety and cognitive pharmacodynamics following dose escalations with 3-methylmethcathinone (3-MMC): a first in human, designer drug study.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2025Trial
- A randomized placebo controlled trial demonstrates the effect of dl-methylephedrine on brain functions is weaker than that of pseudoephedrine.Scientific reports · 2024Trial
- Trial
- Cognitive enhancement: Effects of methylphenidate, modafinil, and caffeine on latent memory and resting state functional connectivity in healthy adults.Human brain mapping · 2022Trial
- Cognitive enhancement effects of stimulants: a randomized controlled trial testing methylphenidate, modafinil, and caffeine.Psychopharmacology · 2021Trial
- Effects of Solriamfetol on Quality-of-Life Measures from a 12-Week Phase 3 Randomized Controlled Trial.Annals of the American Thoracic Society · 2020Trial
- The acute effect of Hypericum perforatum on short-term memory in healthy adults.Psychopharmacology · 2019Trial
- Acute effects of lisdexamfetamine and D-amphetamine on social cognition and cognitive performance in a placebo-controlled study in healthy subjects.Psychopharmacology · 2018Trial
- Rapid Analysis of Caffeine, Protein and Trigonelline in Ugandan Arabica Coffee Using NIRS and Machine Learning Algorithms.Plants (Basel, Switzerland) · 2026Article
- The Relationship Between Serum Neurosteroids and Oxytocin Levels and Craving, Aggression and Emotion Regulation in Patients with Methamphetamine Use Disorder.Medical sciences (Basel, Switzerland) · 2026Observational
- Historical development of ADHD from 1753 to 2026.Frontiers in psychology · 2026Review
- Episodic memory and inhibitory control in people who inject substances results of cohort COSINUS study.BMC psychiatry · 2025Article
- A Cocaine-Activated Ensemble Exerts Increased Control Over Behavior While Decreasing in Size.Biological psychiatry · 2025Article
- The Issue of "Smart Drugs" on the Example of Modafinil: Toxicological Analysis of Evidences and Biological Samples.Journal of xenobiotics · 2025Article
- Plasticity of ventral tegmental area disturbance during abstinence after repeated amphetamine exposure: restoration by selective activation of group II metabotropic glutamate receptors.Frontiers in pharmacology · 2025Article
49 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 2 institutions in 1 country.
Funding
Abstract
Psychostimulants such as cocaine have been used as performance enhancers throughout recorded history. Although psychostimulants are commonly prescribed to improve attention and cognition, a great deal of literature has described their ability to induce cognitive deficits, as well as addiction. How can a single drug class be known to produce both cognitive enhancement and impairment? Properties of the particular stimulant drug itself and individual differences between users have both been suggested to dictate the outcome of stimulant use. A more parsimonious alternative, which we endorse, is that dose is the critical determining factor in cognitive effects of stimulant drugs. Herein, we review several popular stimulants (cocaine, amphetamine, methylphenidate, modafinil, and caffeine), outlining their history of use, mechanism of action, and use and abuse today. One common graphic depiction of the cognitive effects of psychostimulants is an inverted U-shaped dose-effect curve. Moderate arousal is beneficial to cognition, whereas too much activation leads to cognitive impairment. In parallel to this schematic, we propose a continuum of psychostimulant activation that covers the transition from one drug effect to another as stimulant intake is increased. Low doses of stimulants effect increased arousal, attention, and cognitive enhancement; moderate doses can lead to feelings of euphoria and power, as well as addiction and cognitive impairment; and very high doses lead to psychosis and circulatory collapse. This continuum helps account for the seemingly disparate effects of stimulant drugs, with the same drug being associated with cognitive enhancement and impairment.
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What OpenQuestion holds
Registered trials
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.