Local changes in computational non-rapid eye movement sleep depth in infants

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Satomaa , A-L , Saarenpaa-Heikkila , O , Huupponen , E , Kirjavainen , T , Heinonen , J & Himanen , S-L 2018 , ' Local changes in computational non-rapid eye movement sleep depth in infants ' , Clinical Neurophysiology , vol. 129 , no. 2 , pp. 448-454 . https://doi.org/10.1016/j.clinph.2017.09.116

Title: Local changes in computational non-rapid eye movement sleep depth in infants
Author: Satomaa, Anna-Liisa; Saarenpaa-Heikkila, Outi; Huupponen, Eero; Kirjavainen, Turkka; Heinonen, Juhani; Himanen, Sari-Leena
Other contributor: University of Helsinki, Clinicum



Date: 2018-02
Language: eng
Number of pages: 7
Belongs to series: Clinical Neurophysiology
ISSN: 1388-2457
DOI: https://doi.org/10.1016/j.clinph.2017.09.116
URI: http://hdl.handle.net/10138/301080
Abstract: Objective: Deep NREM sleep and its hallmark EEG phenomenon slow wave activity (SWA) are under homeostatic control in adults. SWA is also locally regulated as it increases in the brain areas that have been used intensively. Moreover, in children, SWA is a marker of cortical maturation. In the present study the local properties of NREM sleep depth were evaluated using the quantitative mean frequency method. We aimed to study if age is related to NREM sleep depth in young infants. In addition, we studied if young infants have local differences in their NREM sleep. Methods: Ambulatory over-night polysomnographies were recorded in 59 healthy and full-term infants at the age of one month. The infants were divided into two age groups (= 44 weeks) to allow maturational evaluations. Results: The quantitative sleep depth analysis showed differences between the age groups. In addition, there were local sleep depth differences within the age groups. Conclusions: The sleep depth change with age is most likely related to cortical maturation, whereas the local sleep depth gradients might also reflect the use-dependent properties of SWA. (C) 2017 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.
Subject: Infant
Sleep
SWA
NREM
EEG
Maturation
Sleep depth
NEAR-INFRARED SPECTROSCOPY
SLOW-WAVE ACTIVITY
CORTICAL ACTIVITY
NEWBORN-INFANTS
APNEA PATIENTS
QUIET SLEEP
1ST YEAR
LIFE
STIMULATION
3112 Neurosciences
3124 Neurology and psychiatry
3123 Gynaecology and paediatrics
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