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Cited by 41Sleep and Wakefulness ResearchSleep and related disordersDown syndrome and intellectual disability research

Nocturnal sleep in severely mentally retarded children: Abnormal eeg patterns in sleep cycle

Shibagaki, M, Kiyono, S, Watanabe, K·1980·Electroencephalography and Clinical Neurophysiology
DOI 10.1016/0013-4694(80)90228-x
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Abstract

Sleep EEG patterns in 43 mentally retarded children (from 4 months to 80 years of age) were studied throughout nocturnal sleep and the following results were obtained. (1) Twenty-two cases evidenced normal sleep patterns that could be classified into 6 stages. (2) The 21 other cases showed some abnormal sleep EEG patterns as follows: (a) absence of sleep spindles (n = 18) which included cases of high voltage fast activity (n = 2) and cases of low voltage activity throughout nocturnal sleep (n = 3); (b) indistinguishable delta and theta activities (n = 1), extreme spindle-like pattern (n = 1), absence of REM sleep (n = 1). (3) The severely mentally retarded children under 18 months had definitely decreased spindle activity in comparison to the values obtained by other authors from normal children. (4) The majority of the abnormal sleep EEG patterns occurred during light sleep. (5) A significant decrease in DQ was found in children with abnormal sleep patterns throughout NREM sleep as compared with those in whom abnormal EEGs occurred only during stages 1 and 2. (6) It was concluded that the EEG recorded in nocturnal sleep may serve as a useful indicator of abnormality in mentally retarded children.

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Crossref · 10.1016/0013-4694(80)90228-x

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19 of 19 references verified0 citation errors · 0 not checkable

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  • Abnormally large spindles or absence of spindles were observed in mentally retarded and dyslexic children.

    “Abnormally large spindles or the absence of spindles were observed in mentally retarded and dyslexic children (93,148,400,455,456,1070,1071).”

    From About Sleep's Role in Memory (2013) · cites this paper as [1070]

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Authors
Shibagaki, M., Kiyono, S., & Watanabe, K.
Affiliations
Aichi Developmental Disability Center (JP)
ORCID
Watanabe, K
Venue
Electroencephalography and Clinical Neurophysiology
Publisher
Elsevier BV
Published
1980-08
Volume
49
Issue
3-4
Pages
337-344
ISSN
0013-4694 (ISSN-L)
DOI
10.1016/0013-4694(80)90228-x
OpenAlex
W2074070052
Cited by
41
References
19
Citations by year
2025: 1 · 2023: 3 · 2022: 3 · 2020: 1 · 2019: 1 · 2016: 2 · 2015: 1 · 2013: 1
FWCI
1.96
Type
journal article
Language
en
Open access
closed
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations
  • Electroencephalography and Clinical Neurophysiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Down syndrome and intellectual disability research
Keywords
nocturnal sleep, severe intellectual disability, sleep spindles, NREM sleep, delta and theta activity, sleep stages, infants
MeSH terms
Cerebral Cortex, Child, Child, Preschool, Electroencephalography, Evoked Potentials, Female, Humans, Infant, Male, Intellectual Disability, Sleep Stages, Sleep, REM

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