Evidence map›Paper›PMID 33807381›Full record

ArticleEntropy (Basel, Switzerland)2021

Complexity of Body Movements during Sleep in Children with Autism Spectrum Disorder.

Naoki Furutani, Tetsuya Takahashi, Nobushige Naito, Takafumi Maruishi, Yuko Yoshimura, Chiaki Hasegawa, Tetsu Hirosawa, Mitsuru Kikuchi

Open access · goldAbstract read
In one paragraph

Article in Entropy (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.6field-weighted citation impact, top 38% 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

3 citing papers in PubMed, 9 citations in OpenAlex.

  1. Article
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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 2 institutions in 1 country.

Naoki FurutaniDepartment of Psychiatry and Neurobiology, Graduate School of Medical Science, Kanazawa University, Kanazawa 920-8640, Japan.ORCID 0000-0001-5953-2114
Tetsuya TakahashiResearch Center for Child Mental Development, Kanazawa University, Kanazawa 920-8640, Japan.
Nobushige NaitoDepartment of Psychiatry and Neurobiology, Graduate School of Medical Science, Kanazawa University, Kanazawa 920-8640, Japan.
Takafumi MaruishiDepartment of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University, Fukuoka 819-0395, Japan.
Yuko YoshimuraResearch Center for Child Mental Development, Kanazawa University, Kanazawa 920-8640, Japan.
Chiaki HasegawaResearch Center for Child Mental Development, Kanazawa University, Kanazawa 920-8640, Japan.
Tetsu HirosawaDepartment of Psychiatry and Neurobiology, Graduate School of Medical Science, Kanazawa University, Kanazawa 920-8640, Japan.
Mitsuru KikuchiDepartment of Psychiatry and Neurobiology, Graduate School of Medical Science, Kanazawa University, Kanazawa 920-8640, Japan.
Kanazawa University · JPKyushu University · JP

Funding

Japan Science and Technology Agency Center of Innovation ProgramJapan Science and Technology Agency JPMJCR17A4
6 · The paper itself

Abstract

Recently, measuring the complexity of body movements during sleep has been proven as an objective biomarker of various psychiatric disorders. Although sleep problems are common in children with autism spectrum disorder (ASD) and might exacerbate ASD symptoms, their objectivity as a biomarker remains to be established. Therefore, details of body movement complexity during sleep as estimated by actigraphy were investigated in typically developing (TD) children and in children with ASD. Several complexity analyses were applied to raw and thresholded data of actigraphy from 17 TD children and 17 children with ASD. Determinism, irregularity and unpredictability, and long-range temporal correlation were examined respectively using the false nearest neighbor (FNN) algorithm, information-theoretic analyses, and detrended fluctuation analysis (DFA). Although the FNN algorithm did not reveal determinism in body movements, surrogate analyses identified the influence of nonlinear processes on the irregularity and long-range temporal correlation of body movements. Additionally, the irregularity and unpredictability of body movements measured by expanded sample entropy were significantly lower in ASD than in TD children up to two hours after sleep onset and at approximately six hours after sleep onset. This difference was found especially for the high-irregularity period. Through this study, we characterized details of the complexity of body movements during sleep and demonstrated the group difference of body movement complexity across TD children and children with ASD. Complexity analyses of body movements during sleep have provided valuable insights into sleep profiles. Body movement complexity might be useful as a biomarker for ASD.

Indexed as

accelerometeractigraphycircadian rhythm disruptiondetrended fluctuation analysis (DFA)entropy-based methodsexpanded sample entropy (expSampEn)false nearest neighbors (FNN)information theoryinsomnialong-range temporal correlation

Identifiers

PMID33807381
PMCPMC8066562
OpenAlexW3141142052

What OpenQuestion holds

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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.