Anurag Ankit, Datta Karuna, Bhutambare Anna, Vl Mamatha, Narawade Yogita, Kumar Siddharth
Medical Cadet, Armed Forces Medical College, Pune, India.
Professor & Head, Department of Sports Medicine, PI, DST SATYAM & O I/C Human Sleep Lab, Armed Forces Medical College Pune, India.
Med J Armed Forces India. 2024 Dec;80(Suppl 1):S144-S152. doi: 10.1016/j.mjafi.2023.01.007. Epub 2023 Apr 3.
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.
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.
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.
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.
睡眠剥夺会导致人的表现、警觉性下降以及健康状况恶化。人们通常意识不到警觉性的降低，最终可能会做出不准确的决策。因此，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（EEG）特征的影响。
共有30名无症状志愿者参与了一项横断面研究。记录了为期14天的基线睡眠日记，并在他们进行正常白天活动时进行了一次白天记录。记录了脑电图、眼电图（EOG）和肌电图（EMG），并根据美国睡眠医学学会的标准用于对他们的睡眠-觉醒进行评分。使用快速傅里叶变换分析脑电图数据。使用DOMINO软件（©SOMNOMEDICS，德国）对睡眠和觉醒持续时间进行快速傅里叶变换。使用Python库计算脑电图频段的功率谱密度（PSD）。
与基线相比，记录的前45分钟β波段显著降低。K均值聚类显示两组聚类，随着前一晚总睡眠时间和卧床时间的减少，白天睡眠δ波PSD值显著降低。研究得出结论，夜间睡眠时间减少的受试者产生的睡眠δ波PSD值明显较低。
夜间睡眠时间缩短与午睡时间睡眠δ波PSD值较差有关，反之亦然。有趣的是，夜间高质量睡眠与白天记录的δ波PSD值相关性更好。
