Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Substance Use Disorders Affecting Sleep01:24

Substance Use Disorders Affecting Sleep

360
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,...
360
REM Sleep Behavior Disorder01:15

REM Sleep Behavior Disorder

1.3K
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...
1.3K
Understanding Sleep01:11

Understanding Sleep

1.4K
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...
1.4K
Insufficient Sleep and Sleep Deprivation01:13

Insufficient Sleep and Sleep Deprivation

801
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...
801
Management of Insomnia01:19

Management of Insomnia

498
The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
498
Biological Clocks and Seasonal Responses02:45

Biological Clocks and Seasonal Responses

41.4K
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
41.4K

You might also read

Related Articles

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

Sort by
Same author

Exploratory Cardiovascular Risk Modeling of Orforglipron Using the PREVENT Equations Compared with the Pooled Cohort Equations: A Post-Hoc Analysis from a Systematic Review and Meta-analysis.

High blood pressure & cardiovascular prevention : the official journal of the Italian Society of Hypertension·2026
Same author

International consensus on mesopancreas and total mesopancreas excision (MESODELPHI).

HPB : the official journal of the International Hepato Pancreato Biliary Association·2026
Same author

Diabetes, prediabetes, and mild cognitive impairment among older adults: the Hitachi Health Study II.

Acta diabetologica·2026
Same author

Clinical Impact of Early Positive Drain Culture on Outcomes and Management After Pancreaticoduodenectomy.

Journal of hepato-biliary-pancreatic sciences·2026
Same author

Neurogenic diarrhoea after superior mesenteric artery divestment or resection for pancreatic adenocarcinoma following preoperative chemotherapy: international multicentre retrospective study.

BJS open·2026
Same author

Duke Pancreatic Monoclonal Antigen Type 2 for Monitoring Carbohydrate Antigen 19-9 Nonexpressor Pancreatic Cancer.

JAMA surgery·2026

Related Experiment Video

Updated: Jan 7, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
08:36

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Published on: August 8, 2019

12.6K

A pattern-based approach to assessing sleep-corrected social jet lag.

Rika Terashima1, Yosuke Inoue2

  • 1Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, California, USA.

Chronobiology International
|December 26, 2025
PubMed
Summary

Social jet lag (SJL), the mismatch between biological clocks and social schedules, impacts health. A refined sleep-corrected SJL measurement offers a consistent approach across diverse sleep patterns, improving accuracy.

Keywords:
Sleepbiological clockssleep deprivationsleep durationsleep-correctedsocial jet lagsocial jetlag

More Related Videos

Human Circadian Phenotyping and Diurnal Performance Testing in the Real World
10:16

Human Circadian Phenotyping and Diurnal Performance Testing in the Real World

Published on: April 7, 2020

9.0K
A Computational Method to Quantify Fly Circadian Activity
13:05

A Computational Method to Quantify Fly Circadian Activity

Published on: October 28, 2017

6.2K

Related Experiment Videos

Last Updated: Jan 7, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
08:36

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Published on: August 8, 2019

12.6K
Human Circadian Phenotyping and Diurnal Performance Testing in the Real World
10:16

Human Circadian Phenotyping and Diurnal Performance Testing in the Real World

Published on: April 7, 2020

9.0K
A Computational Method to Quantify Fly Circadian Activity
13:05

A Computational Method to Quantify Fly Circadian Activity

Published on: October 28, 2017

6.2K

Area of Science:

  • Chronobiology
  • Sleep Science
  • Public Health

Background:

  • Social jet lag (SJL) arises from misaligned biological clocks and social schedules, potentially harming health.
  • Traditional SJL measures may overestimate misalignment by not accounting for sleep duration changes between work and free days.

Purpose of the Study:

  • To introduce a practical, unified framework for calculating sleep-corrected social jet lag (SJLsc).
  • To refine SJL measurement by accounting for sleep duration variations across different sleep patterns.

Main Methods:

  • Utilized National Health and Nutrition Examination Survey (NHANES) data (2017-2020).
  • Developed and illustrated a step-by-step method for calculating SJLsc using a unified rule.
  • Compared the proposed method with Jankowski's SJLsc approach.

Main Results:

  • A small percentage (3.2%) of participants were reclassified into different SJLsc categories (0-<1.0h, 1.0-<2.0h, ≥2.0h) using the new approach.
  • Both methods demonstrated high concordance for continuous SJLsc values (Spearman's ρ = 0.94).
  • The proposed approach provides a simple, transparent, and consistent rule for SJLsc calculation.

Conclusions:

  • The refined SJLsc framework offers a more accurate and practical assessment of social jet lag.
  • This standardized method enhances the reliability of SJL measurement across diverse sleep behaviors.
  • Improved SJL assessment can contribute to better understanding and management of health impacts related to sleep-wake timing discrepancies.