Evidence map›Paper›PMID 26271904›Full record

Trial reportScientific reports2015

Improved human visuomotor performance and pupil constriction after choline supplementation in a placebo-controlled double-blind study.

Marnix Naber, Bernhard Hommel, Lorenza S Colzato

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

19 citing papers in PubMed, 42 citations in OpenAlex.

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  7. Choline supplements: An update.Frontiers in endocrinology · 2023
    Review
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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

3 authors at 2 institutions in 1 country.

Marnix Naber1] Leiden University, Cognitive Psychology, Wassenaarseweg 52, Leiden, 2333 AK, The Netherlands [2] Leiden Institute for Brain and Cognition, Leiden University Medical Center, P.O. Box 9600, Leiden, 2300 RC, The Netherlands.
Bernhard Hommel1] Leiden University, Cognitive Psychology, Wassenaarseweg 52, Leiden, 2333 AK, The Netherlands [2] Leiden Institute for Brain and Cognition, Leiden University Medical Center, P.O. Box 9600, Leiden, 2300 RC, The Netherlands.
Lorenza S Colzato1] Leiden University, Cognitive Psychology, Wassenaarseweg 52, Leiden, 2333 AK, The Netherlands [2] Leiden Institute for Brain and Cognition, Leiden University Medical Center, P.O. Box 9600, Leiden, 2300 RC, The Netherlands.
Leiden University · NLLeiden University Medical Center · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Only few nutrients are known to enhance cognition. Here we explore whether visuomotor performance can be improved through the intake of the nutrient choline, an essential chemical compound in a vertebrate's diet. Choline is abundant in for example eggs and shrimps and many animal studies suggest that it serves as a cognitive enhancer. As choline is important for the communication between motor neurons and the control of skeletal muscles, we assumed that choline supplementation may have positive effects on action coordination in humans. A group of twenty-eight individuals ingested two grams of choline bitartrate or a placebo in two separate sessions. Seventy minutes post ingestion, participants performed a visuomotor aiming task in which they had to rapidly hit the centers of targets. Results showed that participants hit targets more centrally after choline supplementation. Pupil size (a cognition-sensitive biomarker) also significantly decreased after choline intake and correlated positively with the hit distance to the targets and the number of target misses, and negatively with reaction times. These findings point to a choline-induced bias towards action precision in the trade-off between speed and accuracy. The changes in pupil size suggest that choline uptake alters cholinergic functions in the nervous system.

Indexed as

Dietary SupplementsCholineDose-Response Relationship, DrugDouble-Blind MethodFemaleHumansMaleMiosisPlacebo EffectPsychomotor PerformanceReflex, PupillaryYoung AdultCholine

Identifiers

PMID26271904
PMCPMC4536529
OpenAlexW1577904021

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.