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

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...

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...

Higher Mental Functions of Brain: Learning and Memory

Higher Mental Functions of Brain: Learning and Memory

Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or playing an...

Understanding Memory

Understanding Memory

Memory is the retention of information or experiences over time, facilitated through three main processes: encoding, storage, and retrieval. Encoding is the process of inputting information into the memory system. For instance, when listening to a lecture, watching a play, reading a book, or having a conversation, the brain is actively encoding information. This initial stage involves transforming sensory input into a form that can be processed and stored by the brain. Various factors, such as...

Lucid Dreaming

Lucid Dreaming

Lucid dreaming is a unique state of consciousness where an individual realizes they are dreaming while still in the dream. This awareness allows them to manipulate their dream environment consciously. Researchers like Stephen LaBerge have significantly contributed to the understanding of lucid dreams, highlighting that during these dreams, certain areas of the brain, such as the prefrontal cortex, that involve self-awareness and thought evaluation show increased activity.
Studies have shown...

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:

You might also read

Related Articles

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

Sort by

Same author

Targeted dream incubation at sleep onset can influence later dream content in REM sleep: a pilot study.

Frontiers in sleep·2026

Same author

Festschrift in honor of Dr. Robert Stickgold, pioneer in sleep, memory, and dream research.

Sleep advances : a journal of the Sleep Research Society·2026

Same author

Effects of Ultra-short Offline States on Item-level Verbal Memory.

Journal of cognitive neuroscience·2026

Same author

Sleep and wake markers of thalamocortical functioning in early-course psychosis and first-degree relatives.

Schizophrenia (Heidelberg, Germany)·2026

Same author

Recovery sleep after total sleep deprivation preserves neutral and enhances emotional declarative memory.

Sleep advances : a journal of the Sleep Research Society·2026

Same author

Editorial: The role of sleep in learning and memory.

Frontiers in sleep·2025

Search research articles

Related Experiment Video

Updated: Jun 2, 2026

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood

Published on: October 2, 2019

Memory, Sleep and Dreaming: Experiencing Consolidation.

Erin J Wamsley¹, Robert Stickgold

¹Instructor in Psychiatry, Harvard Medical School/Beth Israel Deaconess Medical Center. Boston MA.

Sleep Medicine Clinics

|April 26, 2011

Summary

Post-learning sleep aids human memory consolidation. Newly learned information is reactivated during sleep, influencing dream content and revealing sleep's memory functions.

Area of Science:

Neuroscience
Cognitive Psychology
Sleep Science

Background:

Post-learning sleep significantly enhances human memory performance.
Learning experiences shape the content of sleep mentation, commonly known as dreaming.

Purpose of the Study:

To review evidence linking memory consolidation during sleep to dream content.
To explore how sleep mentation offers insights into the mnemonic functions of sleep.

Main Methods:

Literature review of studies on sleep, memory, and mentation.
Analysis of research demonstrating memory reactivation during sleep.
Examination of studies correlating sleep mentation with recent learning.

Main Results:

More Related Videos

Eye Tracking, Cortisol, and a Sleep vs. Wake Consolidation Delay: Combining Methods to Uncover an Interactive Effect of Sleep and Cortisol on Memory

Eye Tracking, Cortisol, and a Sleep vs. Wake Consolidation Delay: Combining Methods to Uncover an Interactive Effect of Sleep and Cortisol on Memory

Published on: June 18, 2014

Related Experiment Videos

Last Updated: Jun 2, 2026

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood

Published on: October 2, 2019

Eye Tracking, Cortisol, and a Sleep vs. Wake Consolidation Delay: Combining Methods to Uncover an Interactive Effect of Sleep and Cortisol on Memory

Eye Tracking, Cortisol, and a Sleep vs. Wake Consolidation Delay: Combining Methods to Uncover an Interactive Effect of Sleep and Cortisol on Memory

Published on: June 18, 2014

Newly encoded memories undergo reactivation and consolidation in the brain during sleep.

The content of sleep mentation directly reflects the reactivation of recent memories.

Sleep mentation provides a window into the brain's memory processing during sleep.

Conclusions:

Sleep plays a crucial role in solidifying newly acquired memories.
Dream content is not random but can reflect ongoing memory consolidation processes.
Studying dream content can illuminate the neurobiological mechanisms underlying memory."