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

Stages of Sleep01:22

Stages of Sleep

1.5K
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...
1.5K
Management of Insomnia01:19

Management of Insomnia

732
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...
732
Insufficient Sleep and Sleep Deprivation01:13

Insufficient Sleep and Sleep Deprivation

977
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...
977
Substance Use Disorders Affecting Sleep01:24

Substance Use Disorders Affecting Sleep

468
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,...
468
Sedatives and Hypnotics Drugs: Miscellaneous Agents01:17

Sedatives and Hypnotics Drugs: Miscellaneous Agents

682
Sedatives and hypnotics encompass a wide range of substances, each with its unique mechanism of action, uses, and potential adverse effects.
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
682
Sleep-Wake Cycles01:24

Sleep-Wake Cycles

3.1K
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:
3.1K

You might also read

Related Articles

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

Sort by
Same author

Better together: A priority-setting partnership to identify research priorities for child maltreatment in Canada.

Child abuse & neglect·2026
Same author

Longitudinal Associations Between Anxiety and Depression in Transition From Childhood to Adolescence.

Depression and anxiety·2026
Same author

Transactional Associations Between Maternal Depressive Symptoms and Pre-Adolescent Children's ADHD Symptoms During the COVID-19 Pandemic.

Journal of clinical child and adolescent psychology : the official journal for the Society of Clinical Child and Adolescent Psychology, American Psychological Association, Division 53·2026
Same author

Organizing adult attachment in alternative ways: A qualitative assessment of schemas antithetical to the secure base script.

PloS one·2026
Same author

Prevalence of adverse childhood experience items: a systematic review and meta-analyses.

The Lancet. Public health·2026
Same author

Sport versus Nonsport Injury Setting as a Moderator of Postconcussive Symptoms Following Pediatric Concussion: An Advancing Concussion Assessment in Pediatrics Study.

The Journal of pediatrics·2026

Related Experiment Video

Updated: Feb 23, 2026

Author Spotlight: Unveiling the Connection Between Sleep Disorders and Cognitive Symptoms in Depression
04:33

Author Spotlight: Unveiling the Connection Between Sleep Disorders and Cognitive Symptoms in Depression

Published on: April 26, 2024

1.6K

Sleep quality during pregnancy: A meta-analysis.

Ivan D Sedov1, Emily E Cameron1, Sheri Madigan2

  • 1Department of Psychology, University of Calgary, Calgary, AB, Canada.

Sleep Medicine Reviews
|September 4, 2017
PubMed
Summary

Nearly half of pregnant women experience poor sleep quality, with sleep worsening in the third trimester. This meta-analysis quantifies sleep quality changes during pregnancy, highlighting the need for clinical awareness and intervention for severe cases.

Keywords:
Pittsburgh sleep quality indexPregnancySleep disturbanceSleep quality

More Related Videos

Meta-Analysis of the Effectiveness and Safety of Shugan Jieyu Capsules for the Treatment of Insomnia
04:34

Meta-Analysis of the Effectiveness and Safety of Shugan Jieyu Capsules for the Treatment of Insomnia

Published on: February 17, 2023

1.7K
Human Primary Trophoblast Cell Culture Model to Study the Protective Effects of Melatonin Against Hypoxia/reoxygenation-induced Disruption
12:02

Human Primary Trophoblast Cell Culture Model to Study the Protective Effects of Melatonin Against Hypoxia/reoxygenation-induced Disruption

Published on: July 30, 2016

16.6K

Related Experiment Videos

Last Updated: Feb 23, 2026

Author Spotlight: Unveiling the Connection Between Sleep Disorders and Cognitive Symptoms in Depression
04:33

Author Spotlight: Unveiling the Connection Between Sleep Disorders and Cognitive Symptoms in Depression

Published on: April 26, 2024

1.6K
Meta-Analysis of the Effectiveness and Safety of Shugan Jieyu Capsules for the Treatment of Insomnia
04:34

Meta-Analysis of the Effectiveness and Safety of Shugan Jieyu Capsules for the Treatment of Insomnia

Published on: February 17, 2023

1.7K
Human Primary Trophoblast Cell Culture Model to Study the Protective Effects of Melatonin Against Hypoxia/reoxygenation-induced Disruption
12:02

Human Primary Trophoblast Cell Culture Model to Study the Protective Effects of Melatonin Against Hypoxia/reoxygenation-induced Disruption

Published on: July 30, 2016

16.6K

Area of Science:

  • Obstetrics and Gynecology
  • Sleep Medicine
  • Psychiatry

Background:

  • Sleep quality commonly changes during pregnancy.
  • Prevalence estimates for poor sleep quality in pregnant women vary significantly.
  • Understanding these variations is crucial for clinical practice and research.

Purpose of the Study:

  • To conduct a meta-analysis quantifying the prevalence of poor sleep quality during pregnancy.
  • To analyze how sleep quality changes across different trimesters.
  • To investigate the influence of gestational age on sleep quality.

Main Methods:

  • Systematic literature search of PubMed, PsycINFO, and Web of Science databases.
  • Inclusion of 24 articles reporting poor sleep quality using the Pittsburgh Sleep Quality Index (PSQI) score ≥5.
  • Meta-analysis of data from 11,002 pregnant participants.

Main Results:

  • The average PSQI score during pregnancy was 6.07.
  • 45.7% of pregnant women reported poor sleep quality (PSQI ≥5).
  • Sleep quality significantly decreased from the second to the third trimester (1.68-point increase in PSQI score).
  • Older gestational age was associated with higher mean PSQI scores and increased prevalence of poor sleep quality.

Conclusions:

  • A substantial proportion of pregnant women experience poor sleep quality, particularly in later trimesters.
  • Clinicians should recognize expected sleep reductions but consider intervention for severe complaints.
  • Further research is needed to identify factors contributing to poor sleep quality in pregnancy.