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Related Concept Videos

Working Memory01:24

Working Memory

Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this information.
Understanding Sleep01:11

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.
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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...
Role of Hippocampus in Memory01:19

Role of Hippocampus in Memory

The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
Role of Cerebellum and Prefrontal Cortex in Memory01:14

Role of Cerebellum and Prefrontal Cortex in Memory

The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the cerebellum's...
Sleep-Wake Cycles01:24

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:

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Related Experiment Video

Updated: May 16, 2026

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood
08:20

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

Published on: October 2, 2019

Working memory is partially preserved during sleep.

Jérôme Daltrozzo1, Léa Claude, Barbara Tillmann

  • 1CNRS, UMR5292, Lyon Neuroscience Research Center, Auditory Cognition and Psychoacoustics Team, Lyon, France. jerome.daltrozzo@gmail.com

Plos One
|December 14, 2012
PubMed
Summary
This summary is machine-generated.

Working memory (WM) for language during sleep is partially maintained. While sleep impairs complex processing, basic language comprehension persists, albeit with reduced capacity.

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Eye Tracking, Cortisol, and a Sleep vs. Wake Consolidation Delay: Combining Methods to Uncover an Interactive Effect of Sleep and Cortisol on Memory
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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: May 16, 2026

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood
08:20

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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
08:08

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

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Sleep Research

Background:

  • Cognitive processes like speech perception are studied during sleep.
  • Working memory (WM) during sleep remains largely unexplored.

Purpose of the Study:

  • To investigate the capacity of working memory for linguistic information during sleep.
  • To assess how background noise and sentential semantic length (SSL) affect WM during sleep.

Main Methods:

  • Event-related potentials (ERPs) were recorded, focusing on the N400 component.
  • Participants underwent speech perception tasks during sleep stages 2 and paradoxical sleep.
  • Stimuli included sentences with varying sentential semantic length (SSL) and semantic congruency, with and without moderate background noise.

Main Results:

  • An N400 effect, indicating semantic processing, was observed for both short and long SSL sentences without noise.
  • The N400 effect was attenuated for long SSL sentences in moderate noise during sleep.
  • This suggests a reduced capacity for processing complex semantic information during sleep compared to wakefulness.

Conclusions:

  • Working memory for linguistic information is partially preserved during sleep.
  • Sleep state impacts the capacity of working memory, particularly for complex language processing.
  • Future research should explore the neural mechanisms underlying preserved WM during sleep.