Sleep duration at night affects daytime wake EEG spectra

Q2 Medicine

Medical Journal Armed Forces India Pub Date : 2024-12-01 DOI:10.1016/j.mjafi.2023.01.007

Ankit Anurag , Karuna Datta , Anna Bhutambare , Mamatha VL , Yogita Narawade , Siddharth Kumar

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引用次数: 0

Abstract

Background

Sleep deprivation leads to decreased performance, alertness and degradation in the health status of a person. Often the person remains unaware of the reduced alertness and may end up taking inaccurate decisions. There was a need to study the sleep duration of college goers and to study the effect of total night-time sleep duration on daytime Electroencephalogram (EEG) characteristics.

Methods

A total of 30 asymptomatic volunteers were enrolled in a cross-sectional study. A baseline sleep diary for fourteen days was taken and one daytime recording was done while carrying out their normal daytime activity. EEG, electrooculography (EOG) and electromyography (EMG) were recorded, which were used for the scoring of their sleep-wake using the American Academy of Sleep Medicine criteria. EEG data were analysed using fast Fourier transform. Fast Fourier transform was done for sleep and wake durations using DOMINO software (©SOMNOMEDICS, Germany). A Python library was used to calculate power spectral density (PSD) in EEG frequency bands.

Results

A beta band was significantly reduced in the first 45 min of the recording as compared to the baseline. K means cluster showed clustering of two groups with a significant reduction of daytime sleep delta PSD values with reduced total sleep time and time in bed the previous night. The study concluded that subjects with reduced night-time sleep duration generated significantly lesser sleep delta PSD values.

Conclusion

Reduced duration of night-time sleep was associated with worse nap time sleep delta PSD values and vice versa. Interestingly, good quality sleep at night correlated better with delta PSD values of daytime recording.

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夜间睡眠时间影响日间清醒脑电图频谱

背景：睡眠不足会导致一个人的表现下降、警觉性下降和健康状况恶化。通常，这个人没有意识到警觉性的降低，最终可能会做出不准确的决定。有必要研究大学生的睡眠时间，并研究夜间总睡眠时间对白天脑电图特征的影响。方法对30名无症状志愿者进行横断面研究。他们记录了14天的基线睡眠日记，并在进行正常的白天活动时进行了一次白天记录。记录脑电图（EEG）、眼电图（EOG）和肌电图（EMG），根据美国睡眠医学学会的标准对他们的睡眠-觉醒进行评分。采用快速傅里叶变换对脑电数据进行分析。使用DOMINO软件（©SOMNOMEDICS, Germany）对睡眠和清醒时间进行快速傅里叶变换。使用Python库计算脑电频段的功率谱密度（PSD）。结果与基线相比，在记录的前45分钟，sa β带明显减少。K均值聚类显示两组白天睡眠δ PSD值显著减少，总睡眠时间和前一晚卧床时间减少。研究得出结论，夜间睡眠时间减少的受试者产生的睡眠δ PSD值明显减少。结论夜间睡眠时间缩短与午睡时间睡眠δ PSD值差相关，反之亦然。有趣的是，夜间良好的睡眠质量与白天记录的δ PSD值有更好的相关性。

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

Medical Journal Armed Forces India Medicine-Medicine (all)

CiteScore

3.40

自引率

0.00%

发文量

206

期刊介绍： This journal was conceived in 1945 as the Journal of Indian Army Medical Corps. Col DR Thapar was the first Editor who published it on behalf of Lt. Gen Gordon Wilson, the then Director of Medical Services in India. Over the years the journal has achieved various milestones. Presently it is published in Vancouver style, printed on offset, and has a distribution exceeding 5000 per issue. It is published in January, April, July and October each year.