Regular sleep habits in toddlers are associated with social development and brain coherence

Iwatani, Yoshiko; Kagitani-Shimono, Kuriko; Ono, Azusa; Yamamoto, Tomoka; Mohri, Ikuko; Yoshizaki, Arika; Taniike, Masako

doi:https://doi.org/10.1016/j.sleep.2024.10.018

Regular sleep habits in toddlers are associated with social development and brain coherence

Iwatani, Yoshiko; Kagitani-Shimono, Kuriko; Ono, Azusa et al.

Sleep Medicine, 2024, 124, 531-539

Number of Access:43（2025-04-27 16:34 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/98427

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Title	Regular sleep habits in toddlers are associated with social development and brain coherence
Creator	NRID 1000060724903 1000060724903 researchmap permalink y_iwatani y_iwatani Scopus Author ID 36992967200 36992967200 CreatorName Iwatani, Yoshiko
	NRID 1000060403185 1000060403185 ORCID 0000-0001-9649-9499 0000-0001-9649-9499 researchmap permalink osaka_rengo osaka_rengo Scopus Author ID 13002542100 13002542100 CreatorName Kagitani-Shimono, Kuriko
	CreatorName Ono, Azusa
	NRID 1000030581558 1000030581558 researchmap permalink tomokayamamoto tomokayamamoto Scopus Author ID 55561973800 55561973800 CreatorName Yamamoto, Tomoka
	NRID 1000070399351 1000070399351 ORCID 0000-0002-1850-6347 0000-0002-1850-6347 researchmap permalink read0156483 read0156483 Scopus Author ID 6602234195 6602234195 CreatorName Mohri, Ikuko
	NRID 1000090600552 1000090600552 researchmap permalink ayoshizaki ayoshizaki Scopus Author ID 37666333100 37666333100 CreatorName Yoshizaki, Arika
	NRID 1000030263289 1000030263289 researchmap permalink read0185088 read0185088 Scopus Author ID 7004244133 7004244133 CreatorName Taniike, Masako
Subject	Child
	Coherence
	Development
	Electroencephalography
	Eye-tracking
	Irregular sleep
Description	Iwatani Y., Kagitani-Shimono K., Ono A., et al. Regular sleep habits in toddlers are associated with social development and brain coherence. Sleep Medicine 124, 531 (2024); https://doi.org/10.1016/j.sleep.2024.10.018.
Abstract	Objective: Although sleep habits are associated with the development of toddlers, factors affecting social development and brain function remain unclear. We aimed to elucidate the relationship between sleep habits and social development as well as brain coherence in toddlers. Methods: We used the data set at 1.5–2 years old, in the longitudinal study until 6 years old. We evaluated sleep parameters, such as average wake-up time, bedtime, nighttime sleep duration, total sleep duration, and the standard deviation (SD) of sleep habits. We also examined the development, including the social stimuli fixation percentage using Gazefinder® and electroencephalography (EEG) coherence between brain regions. Results: Seventy-two children (37 boys and 35 girls) were included. The fixation percentage for the human face was negatively correlated with the SD of the total sleep duration, nighttime sleep duration, nap duration, and bedtime (r = −0.516, p = 0.000; r = −0.331, p = 0.005; r = −0.330, p = 0.005; and r = −0.324, p = 0.005, respectively). The EEG analysis indicated that α-band coherence in the right centro-parietal area was negatively correlated with the total sleep duration (r = −0.283, p = 0.016). The path diagram demonstrated a direct significant effect of sleep duration irregularity on development including social communication and fixation percentage for human faces. Additionally, total sleep duration exhibited a direct effect on α cortical coherence in the right centro-parietal area. Conclusions: In this study, we found an association between sleep irregularity and the development of social communication, preference for humans, and brain coherence in toddlers. We suggest that regular sleep plays an important role in promoting the development of social communication.
Publisher	Elsevier B.V.
Source Title	Sleep Medicine
Volume (Issue)	124
Page	531-539
Date of Issued	2024-12-01
Language	English
Handle URL	https://hdl.handle.net/11094/98427
PISSN	13899457
eISSN	18785506
Relation.isVersionOf	DOI (Publisher Version) https://doi.org/10.1016/j.sleep.2024.10.018
Access Rights	embargoed access
CopyRight	© 2024. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
CopyRight	The full-text file will be made open to the public on 1 December 2025 in accordance with the publisher's policy.
oaire:version	Accepted Manuscript
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCTERMS.bibliographicCitation	Sleep Medicine. 2024, 124, p. 531-539
DC.title	Regular sleep habits in toddlers are associated with social development and brain coherence
DC.creator	Iwatani, Yoshiko
	Kagitani-Shimono, Kuriko
	Ono, Azusa
	Yamamoto, Tomoka
	Mohri, Ikuko
	Yoshizaki, Arika
	Taniike, Masako
DC.publisher	Elsevier B.V.
DC.language' scheme='DCTERMS.RFC1766	English
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2024-12-01
DC.identifier	https://doi.org/10.1016/j.sleep.2024.10.018
DC.subject	Child
	Coherence
	Development
	Electroencephalography
	Eye-tracking
	Irregular sleep
DC.description	Iwatani Y., Kagitani-Shimono K., Ono A., et al. Regular sleep habits in toddlers are associated with social development and brain coherence. Sleep Medicine 124, 531 (2024); https://doi.org/10.1016/j.sleep.2024.10.018.
DCTERMS.abstract	Objective: Although sleep habits are associated with the development of toddlers, factors affecting social development and brain function remain unclear. We aimed to elucidate the relationship between sleep habits and social development as well as brain coherence in toddlers. Methods: We used the data set at 1.5–2 years old, in the longitudinal study until 6 years old. We evaluated sleep parameters, such as average wake-up time, bedtime, nighttime sleep duration, total sleep duration, and the standard deviation (SD) of sleep habits. We also examined the development, including the social stimuli fixation percentage using Gazefinder® and electroencephalography (EEG) coherence between brain regions. Results: Seventy-two children (37 boys and 35 girls) were included. The fixation percentage for the human face was negatively correlated with the SD of the total sleep duration, nighttime sleep duration, nap duration, and bedtime (r = −0.516, p = 0.000; r = −0.331, p = 0.005; r = −0.330, p = 0.005; and r = −0.324, p = 0.005, respectively). The EEG analysis indicated that α-band coherence in the right centro-parietal area was negatively correlated with the total sleep duration (r = −0.283, p = 0.016). The path diagram demonstrated a direct significant effect of sleep duration irregularity on development including social communication and fixation percentage for human faces. Additionally, total sleep duration exhibited a direct effect on α cortical coherence in the right centro-parietal area. Conclusions: In this study, we found an association between sleep irregularity and the development of social communication, preference for humans, and brain coherence in toddlers. We suggest that regular sleep plays an important role in promoting the development of social communication.
DC.rights	© 2024. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
DC.rights	The full-text file will be made open to the public on 1 December 2025 in accordance with the publisher's policy.
DC.format	98427
citation_title	Regular sleep habits in toddlers are associated with social development and brain coherence
citation_author	Iwatani, Yoshiko
	Kagitani-Shimono, Kuriko
	Ono, Azusa
	Yamamoto, Tomoka
	Mohri, Ikuko
	Yoshizaki, Arika
	Taniike, Masako
citation_publisher	Elsevier B.V.
citation_language	English
citation_date	2024-12-01
citation_journal_title	Sleep Medicine
citation_volume	124
citation_firstpage	531
citation_lastpage	539
citation_doi	https://doi.org/10.1016/j.sleep.2024.10.018
citation_public_url	https://hdl.handle.net/11094/98427

Regular sleep habits in toddlers are associated with social development and brain coherence

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