Evidence map›Paper›PMID 26607963›Full record

ArticleScientific reports2015

Nap sleep spindle correlates of intelligence.

Péter P Ujma, Róbert Bódizs, Ferenc Gombos, Johannes Stintzing, Boris N Konrad, Lisa Genzel, Axel Steiger, Martin Dresler

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

11 citing papers in PubMed, 34 citations in OpenAlex.

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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

8 authors at 6 institutions in 4 countries.

Péter P UjmaInstitute of Behavioural Sciences, Semmelweis University, H-1089 Budapest, Hungary.
Róbert BódizsInstitute of Behavioural Sciences, Semmelweis University, H-1089 Budapest, Hungary.
Ferenc GombosDepartment of General Psychology, Pázmány Péter Catholic University, H-1088 Budapest, Hungary.
Johannes StintzingMax Planck Institute of Psychiatry, 80804 Munich, Germany.
Boris N KonradDonders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, 6525 EN Nijmegen, The Netherlands.
Lisa GenzelCentre for Cognitive and Neural Systems, University of Edinburgh, EH8 9JZ Edinburgh, UK.
Axel SteigerMax Planck Institute of Psychiatry, 80804 Munich, Germany.
Martin DreslerMax Planck Institute of Psychiatry, 80804 Munich, Germany.
Max Planck Institute of Psychiatry · DESemmelweis University · HUPázmány Péter Catholic University · HURadboud University Medical Center · NLRadboud University Nijmegen · NLUniversity of Edinburgh · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Sleep spindles are thalamocortical oscillations in non-rapid eye movement (NREM) sleep, that play an important role in sleep-related neuroplasticity and offline information processing. Several studies with full-night sleep recordings have reported a positive association between sleep spindles and fluid intelligence scores, however more recently it has been shown that only few sleep spindle measures correlate with intelligence in females, and none in males. Sleep spindle regulation underlies a circadian rhythm, however the association between spindles and intelligence has not been investigated in daytime nap sleep so far. In a sample of 86 healthy male human subjects, we investigated the correlation between fluid intelligence and sleep spindle parameters in an afternoon nap of 100 minutes. Mean sleep spindle length, amplitude and density were computed for each subject and for each derivation for both slow and fast spindles. A positive association was found between intelligence and slow spindle duration, but not any other sleep spindle parameter. As a positive correlation between intelligence and slow sleep spindle duration in full-night polysomnography has only been reported in females but not males, our results suggest that the association between intelligence and sleep spindles is more complex than previously assumed.

Indexed as

AdolescentAdultBrain WavesElectrodesElectroencephalographyHumansIntelligenceMaleSleepYoung Adult

Identifiers

PMID26607963
PMCPMC4660428
OpenAlexW2301667111

What OpenQuestion holds

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LicenceCC BY
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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.