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Related Concept Videos

Insufficient Sleep and Sleep Deprivation01:13

Insufficient Sleep and Sleep Deprivation

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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.
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Overview of Synapses01:25

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A synapse is a specialized structure where two neurons connect, allowing them to pass an electrical or chemical signal to another neuron. It is the point of communication between neurons. The term "synapse" is derived from the Greek word "synapsis," which means "conjunction." The entire process of neural communication revolves around the synapse. When activated, a neuron releases chemicals known as neurotransmitters into the synapse. These neurotransmitters cross the...
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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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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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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).
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Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
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Related Experiment Video

Updated: Jun 9, 2025

Chronic Sleep Deprivation in Mouse Pups by Means of Gentle Handling
03:46

Chronic Sleep Deprivation in Mouse Pups by Means of Gentle Handling

Published on: October 11, 2018

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Developing forebrain synapses are uniquely vulnerable to sleep loss.

Sean M Gay1, Elissavet Chartampila1, Julia S Lord1

  • 1Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599.

Proceedings of the National Academy of Sciences of the United States of America
|October 23, 2024
PubMed
Summary
This summary is machine-generated.

Sleep deprivation harms developing brains more than adult brains, impacting cognitive function and synapse development. This vulnerability in juveniles may link to autism spectrum disorder (ASD) risk.

Keywords:
developmentphosphoproteomeproteomesleepsynapse

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Noninvasive, High-throughput Determination of Sleep Duration in Rodents
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Noninvasive, High-throughput Determination of Sleep Duration in Rodents
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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Sleep Science

Background:

  • Sleep is crucial for brain health and cognition throughout life.
  • Synapses are key targets for sleep's restorative functions and are affected by sleep deprivation (SD).
  • Sleep's role in synaptic function differs between development and adulthood, with implications for neurodevelopmental disorders like autism spectrum disorder (ASD).

Purpose of the Study:

  • To investigate the distinct functions of sleep and vulnerability mechanisms to SD across different developmental stages (juvenile, adolescent, adult).
  • To compare the behavioral and molecular responses to acute SD in mice at P21-28, P42-49, and P70-100.

Main Methods:

  • Systematic examination of behavioral and molecular responses to acute sleep deprivation.
  • Utilized juvenile, adolescent, and adult mice of both sexes.
  • Employed subcellular fractionation, proteome, and phosphoproteome analysis.

Main Results:

  • Juvenile mice showed cognitive deficits and lacked adaptations to SD, unlike adults who exhibited resilience.
  • Developing synapses were profoundly vulnerable to SD, with aberrant induction of synapse potentiation, synaptogenesis, and perineuronal net expression in juveniles.
  • Adult synapses demonstrated comparative resilience to SD.

Conclusions:

  • Sleep serves distinct developmental functions, with developing synapses being uniquely vulnerable to sleep disruption.
  • Sleep deprivation in early life profoundly impacts brain development and synapse maturation.
  • The developing synapse may be a convergence point for SD vulnerability and ASD genetic risk, offering insights into ASD susceptibility.