Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Sleep-Wake Cycles

Sleep-Wake Cycles

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:

Understanding Sleep

Understanding Sleep

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...

Substance Use Disorders Affecting Sleep

Substance Use Disorders Affecting Sleep

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,...

Stages of Sleep

Stages of Sleep

Sleep progresses through distinct stages, each characterized by specific brain wave patterns and physiological responses ranging from wakefulness to stages of non-rapid eye movement, known as non-REM, to rapid eye movement, referred to as REM. Understanding these stages helps in recognizing how sleep supports various bodily and cognitive functions.
Before sleep begins, in wakefulness, the brain exhibits primarily beta waves, which are high in frequency and low in amplitude, indicating alertness...

Insufficient Sleep and Sleep Deprivation

Insufficient Sleep and Sleep Deprivation

Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...

REM Sleep Behavior Disorder

REM Sleep Behavior Disorder

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...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Sleep, rest-activity rhythms, and the Charlson Comorbidity Index in the Hispanic Community Health Study/Study of Latinos (HCHS/SOL) and Sueño.

Chronobiology international·2025

Same author

Impacts of Reducing Sitting Time or Increasing Sit-to-Stand Transitions on Blood Pressure and Glucose Regulation in Postmenopausal Women: Three-Arm Randomized Controlled Trial.

Circulation·2025

Same author

Changes in activity spaces, life spaces, and exposures to physical activity-promoting environments among women with overweight or obesity.

Health & place·2025

Same author

Metabolome Alterations Associated with Three-Month Sitting-Time Reduction Among Sedentary Postmenopausal Latinas with Cardiometabolic Disease Risk.

Metabolites·2025

Same author

A doubly robust estimator for the Mann Whitney Wilcoxon rank sum test when applied for causal inference in observational studies.

Journal of applied statistics·2024

Same author

Relationship of physical activity and cognitive functioning among breast cancer survivors: a cross-sectional analysis.

Frontiers in cognition·2024

Same journal

Sleep Mediates the Relationship Between Stress and Blood Pressure in Older African American Women: A Cross-Sectional RiSE Study.

Behavioral sleep medicine·2026

Same journal

Culturally Adapted Cognitive-Behavioral Therapy for Insomnia in Adults From the Arab World: A Three-Arm Randomized Pilot Study.

Behavioral sleep medicine·2026

Same journal

Addressing Daytime Symptoms of Insomnia with CBT-I: An Overview and Practical Applications.

Behavioral sleep medicine·2026

Same journal

Insomnia disorder and occupational demand in commercial freight driving: A qualitative analysis of symptoms and attributions.

Behavioral sleep medicine·2026

Same journal

Measuring What Matters in Sleep: Development and Validation of the Sleep Health Dimensions Questionnaire.

Behavioral sleep medicine·2026

Same journal

Considering Substance Use in Dysfunctional Beliefs About Sleep: Validation of the DBAS-S.

Behavioral sleep medicine·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 5, 2026

Optogenetic Manipulation of Neural Circuits During Monitoring Sleep/wakefulness States in Mice

Optogenetic Manipulation of Neural Circuits During Monitoring Sleep/wakefulness States in Mice

Published on: June 19, 2019

Uplifts and sleep.

Lianne Tomfohr¹, Sonia Ancoli-Israel, Meredith A Pung

¹San Diego State University, USA. ltomfohr@ucsd.edu

Behavioral Sleep Medicine

|January 11, 2011

Summary

This summary is machine-generated.

Daily positive events, or uplifts, are linked to better sleep quality and more restorative sleep stages. This finding highlights the protective role of positive experiences on sleep health in adults.

More Related Videos

Polygraphic Recording Procedure for Measuring Sleep in Mice

Polygraphic Recording Procedure for Measuring Sleep in Mice

Published on: January 25, 2016

Establishing a Device for Sleep Deprivation in Mice

Establishing a Device for Sleep Deprivation in Mice

Published on: September 22, 2023

Related Experiment Videos

Last Updated: Jun 5, 2026

Optogenetic Manipulation of Neural Circuits During Monitoring Sleep/wakefulness States in Mice

Optogenetic Manipulation of Neural Circuits During Monitoring Sleep/wakefulness States in Mice

Published on: June 19, 2019

Polygraphic Recording Procedure for Measuring Sleep in Mice

Polygraphic Recording Procedure for Measuring Sleep in Mice

Published on: January 25, 2016

Establishing a Device for Sleep Deprivation in Mice

Establishing a Device for Sleep Deprivation in Mice

Published on: September 22, 2023

Area of Science:

Psychology
Sleep Science
Behavioral Medicine

Background:

Growing interest in protective factors for sleep quality.
Exploration of daily life events (hassles and uplifts) and their impact on sleep.

Purpose of the Study:

To investigate the relationship between daily hassles and uplifts and both subjective and objective sleep measures.
To determine if positive daily experiences influence sleep architecture and quality.

Main Methods:

Utilized the Combined Hassles and Uplifts Scale (CHUS) for event assessment.
Assessed subjective sleep quality using the Pittsburgh Sleep Quality Index (PSQI).
Measured objective sleep architecture via standard polysomnography (PSG) in healthy adults (N=135).

Main Results:

Uplifts intensity showed a significant association with subjective and objective sleep measures after controlling for covariates.
Increased intensity of daily uplifts correlated with improved subjective sleep quality.
Higher uplifts intensity was linked to reduced time in Stage 2 sleep and increased time in slow-wave sleep (SWS).

Conclusions:

The magnitude of positive daily events (uplifts) appears to play a significant role in sleep regulation.
Perceived positive experiences may contribute to better sleep quality and more efficient sleep architecture.
Future research should further explore the impact of positive event perception on sleep health.