Sleep Spindle Abnormalities in Preschool Children With Autism Spectrum Disability: Insights From Nap Polysomnography

IF 5.6 2区 医学 Q1 BEHAVIORAL SCIENCES
Autism Research Pub Date : 2025-07-23 DOI:10.1002/aur.70087
Sasha D’Ambrosio, Daniele Gualandris, Davide Caputo, Francesco Donati, Ahmad Mayeli, Renata del Giudice, Fabio Ferrarelli, Alessia Mingarelli, Federico Raviglione, Maria Paola Canevini, Armando D’Agostino
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Abstract

Sigma power and sleep spindles are key elements of Non-Rapid Eye Movement (NREM) sleep. They reflect anatomical and physiological properties of brain circuits, are linked with various behavioral outcomes in typically development (TD) children, and undergo significant modifications during development. Furthermore, recent studies have highlighted the potential of NREM sigma power and sleep spindles as early neurophysiological markers for autism spectrum disability (ASD). Here, we conducted polysomnography (PSG)/EEG recordings during afternoon naps on 50 children aged between 2 and 6 years, diagnosed with ASD or TD. EEG recordings from 19 scalp leads were analyzed, focusing on sigma power and sleep spindle parameters. EEG analyses revealed significant differences in power spectral density between ASD and TD children, particularly in the sigma band and adjacent alpha and beta bands, with increased power localized to anterior EEG leads in ASD children. Higher spindle amplitude and integrated spindle activity (ISA) were found in the ASD group, especially in frontal regions. Additional frequency-specific analyses (10–12 Hz, 12–14 Hz, 14–16 Hz) confirmed significant differences in spindle amplitude and distribution patterns, emphasizing the role of brain regions that are detectable from anterior EEG leads in ASD-related sleep abnormalities. No significant differences were found in spindle density, duration, or frequency outside specific clusters. These findings indicate that some sleep spindle parameters, particularly in frontal areas, are altered in ASD. The study highlights the feasibility of using afternoon nap PSG as a practical and effective method to detect these abnormalities in clinical settings. Future research should investigate the developmental trajectory of spindles in ASD and their potential role as neurophysiological biomarkers, offering valuable insights for diagnosis and prognosis.

Abstract Image

学龄前自闭症谱系障碍儿童的睡眠纺锤体异常:来自小睡多导睡眠图的见解。
Sigma功率和睡眠纺锤波是非快速眼动睡眠的关键因素。它们反映了脑回路的解剖和生理特性,与典型发育(TD)儿童的各种行为结果有关,并在发育过程中发生重大变化。此外,最近的研究强调了NREM sigma功率和睡眠纺锤波作为自闭症谱系障碍(ASD)早期神经生理标志物的潜力。在这里,我们对50名年龄在2至6岁之间被诊断为ASD或TD的儿童在午睡期间进行了多导睡眠图(PSG)/脑电图记录。分析19条头皮导联的EEG记录,重点分析sigma功率和睡眠纺锤波参数。脑电图分析显示,ASD儿童和TD儿童的功率谱密度存在显著差异,特别是在sigma波段和邻近的α和β波段,ASD儿童的功率增加定位于脑电图前导联。ASD组纺锤波振幅和综合纺锤波活动(ISA)较高,尤其是在额叶区。额外的频率特异性分析(10- 12hz, 12- 14hz, 14- 16hz)证实了纺锤波振幅和分布模式的显著差异,强调了从前侧脑电图导联可检测到的大脑区域在asd相关睡眠异常中的作用。在特定簇外的纺锤体密度、持续时间或频率方面没有发现显著差异。这些发现表明,ASD患者的一些睡眠纺锤体参数,特别是额叶区域的纺锤体参数发生了改变。该研究强调了在临床环境中使用午睡PSG作为检测这些异常的实用有效方法的可行性。未来的研究应进一步探讨ASD中纺锤体的发育轨迹及其作为神经生理生物标志物的潜在作用,为ASD的诊断和预后提供有价值的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Autism Research
Autism Research 医学-行为科学
CiteScore
8.00
自引率
8.50%
发文量
187
审稿时长
>12 weeks
期刊介绍: AUTISM RESEARCH will cover the developmental disorders known as Pervasive Developmental Disorders (or autism spectrum disorders – ASDs). The Journal focuses on basic genetic, neurobiological and psychological mechanisms and how these influence developmental processes in ASDs.
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