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相关概念视频

Understanding Sleep01:11

Understanding Sleep

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Sleep, an essential biological state, involves significant reductions in physical activity, sensory awareness, and interaction with the environment. This complex physiological process is primarily regulated by specific brain regions, notably the hypothalamus and pons, which govern the sleep-wake cycle or circadian rhythm.
The circadian rhythm, a nearly 24-hour cycle, is deeply influenced by environmental light cues. Light exposure directly affects the hypothalamus, which in turn regulates...
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Variability: Analysis01:11

Variability: Analysis

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Measures of variability are statistical metrics that reveal the dispersion pattern within a dataset. They are pivotal in biostatistics, providing insights into the heterogeneity within health and biological data. Variability signifies the degree to which data points diverge from one another, helping researchers understand the potential range of values and associated uncertainty within the data.
The range is a simple measure of variability, indicating the difference between the highest and...
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Substance Use Disorders Affecting Sleep01:24

Substance Use Disorders Affecting Sleep

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Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
Understanding the concepts of physical dependence,...
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Sleep-Wake Cycles01:24

Sleep-Wake Cycles

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Sleep is an essential physiological process vital to maintaining overall well-being. The reticular activating system (RAS), a network of neurons in the brainstem, regulates wakefulness and sleep. While it may seem passive, sleep consists of distinct cycles, each with its unique characteristics and functions. Two key sleep phases are non-rapid eye movement (NREM) and  rapid eye movement (REM).
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
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REM Sleep Behavior Disorder01:15

REM Sleep Behavior Disorder

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REM Sleep Behavior Disorder (RBD) is a sleep disorder characterized by the absence of muscle paralysis that normally occurs during the REM phase of sleep. This absence allows individuals to physically act out their dreams, which are often vivid and disturbing. Common behaviors exhibited during episodes include kicking, punching, and yelling. These actions can be dangerous, potentially leading to injuries for the person with RBD or their bed partner.
RBD is significantly associated with...
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Variation01:19

Variation

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An important characteristic of any set of data is the variation in the data. In some data sets, the data values are concentrated closely near the mean; in other data sets, the data values are more widely spread out from the mean. The most common measure of variation, or spread, is the standard deviation, which is the square root of variance.
When independent and dependent variables are plotted on a scatter plot, the slope of a line is a value that describes the rate of change between the two...
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相关实验视频

Updated: Jan 8, 2026

Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice
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Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice

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人类睡眠的可变性和可预测性

Marc G Leguia1,2, Christoph Jaehnig1, Ellen van Maren1

  • 1Sleep-Wake-Epilepsy Center, Center for Experimental Neurology, NeuroTec, Department of Neurology, Inselspital Bern, University Hospital, University of Bern, 3007 Bern, Switzerland.

Brain communications
|December 22, 2025
PubMed
概括
此摘要是机器生成的。

个人的睡眠模式显示每晚的变化,但保持一致的核心动态. 研究人员预测非快速眼动 (NREM) 和快速眼动 (REM) 睡眠阶段之间的过渡非常准确,有助于睡眠医学.

关键词:
在NREM中,它是NREM.在REM中,REM是REM.动态时间扭曲.睡眠 睡眠 睡眠 睡眠 睡眠头皮下部的EEG是什么

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Polygraphic Recording Procedure for Measuring Sleep in Mice
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Human Circadian Phenotyping and Diurnal Performance Testing in the Real World

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相关实验视频

Last Updated: Jan 8, 2026

Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice
10:56

Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice

Published on: August 2, 2017

10.5K
Polygraphic Recording Procedure for Measuring Sleep in Mice
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Polygraphic Recording Procedure for Measuring Sleep in Mice

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Human Circadian Phenotyping and Diurnal Performance Testing in the Real World
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Human Circadian Phenotyping and Diurnal Performance Testing in the Real World

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科学领域:

  • 神经科学是一个神经科学.
  • 睡眠科学 睡眠科学
  • 计算生物学 计算生物学

背景情况:

  • 睡眠质量和认知功能取决于REM和NREM睡眠阶段的循环交替.
  • 了解个体睡眠结构的变化和可预测性对于睡眠医学干预至关重要.
  • 之前的研究缺乏对长时间睡眠结构稳健性的纵向数据.

研究的目的:

  • 通过使用超长期记录,在数周内描述睡眠架构的个体变化.
  • 在健康人群中测试睡眠阶段过渡的可预测性.
  • 为了研究NREM-REM睡眠模式在连续夜间的稳定性.

主要方法:

  • 在8名受试者中,利用最小侵入性头皮下脑电图 (EEG) 进行长度睡眠记录,平均时间为30天.
  • 将EEG信号分解成五个频段 (δ, θ, α, σ, β),使用多渐变时间频率分析.
  • 使用无监督和监督学习来量化光谱变异性和预测睡眠阶段过渡,分别.

主要成果:

  • 睡眠结构的差异在个人中明显较低 (D = 2.5 ± 0.7),而不是在个人之间 (D = 4.1 ± 0.5).
  • 确定了每个人的NREM-REM光谱架构独特的原型睡眠模式.
  • 成功预测NREM到REM睡眠过渡 2-4分钟提前高精度 (AUC = 0.88) 基于δ和σ频段的相互作用.

结论:

  • 健康的人类睡眠在连续几个晚上表现出变化,但核心睡眠振荡动态在个体内是一致的.
  • 睡眠阶段过渡的可预测性为预测睡眠阶段特定的病理症状提供了潜力.
  • 这项研究通过长期睡眠监测和预测建模为个性化睡眠医学奠定了基础.