Evidence map›Paper›PMID 27827445›Full record

Trial reportScientific reports2016

Decrease in fMRI brain activation during working memory performed after sleeping under 10 lux light.

Seung-Gul Kang, Ho-Kyoung Yoon, Chul-Hyun Cho, Soonwook Kwon, June Kang, Young-Min Park, Eunil Lee, Leen Kim, Heon-Jeong Lee

Abstract readClinical Trial
In one paragraph

Trial report in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
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

4 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
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

9 authors.

Seung-Gul KangDepartment of Psychiatry, Gil Medical Center, Gachon University, School of Medicine, Incheon, Korea.
Ho-Kyoung YoonDepartment of Psychiatry, Korea University College of Medicine, Seoul, Korea.
Chul-Hyun ChoDepartment of Psychiatry, Korea University College of Medicine, Seoul, Korea.
Soonwook KwonDepartment of Anatomy, Korea University College of Medicine, Seoul, Korea.
June KangDepartment of Biomedical Science, Korea University College of Medicine, Seoul, Korea.
Young-Min ParkDepartment of Psychiatry, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea.
Eunil LeeDepartment of Preventive Medicine, Korea University College of Medicine, Seoul, Korea.
Leen KimDepartment of Psychiatry, Korea University College of Medicine, Seoul, Korea.
Heon-Jeong LeeDepartment of Psychiatry, Korea University College of Medicine, Seoul, Korea.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of this study was to investigate the effect of exposure to dim light at night (dLAN) when sleeping on functional brain activation during a working-memory tasks. We conducted the brain functional magnetic resonance imaging (fMRI) analysis on 20 healthy male subjects. All participants slept in a polysomnography laboratory without light exposure on the first and second nights and under a dim-light condition of either 5 or 10 lux on the third night. The fMRI scanning was conducted during n-back tasks after second and third nights. Statistical parametric maps revealed less activation in the right inferior frontal gyrus (IFG) after exposure to 10-lux light. The brain activity in the right and left IFG areas decreased more during the 2-back task than during the 1- or 0-back task in the 10-lux group. The exposure to 5-lux light had no significant effect on brain activities. The exposure to dLAN might influence the brain function which is related to the cognition.

Indexed as

Magnetic Resonance ImagingAdultBrainCognitionHumansMaleMemoryPolysomnographySleep

Identifiers

PMID27827445
PMCPMC5101482

What OpenQuestion holds

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Registered trials

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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.