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

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Published on: October 2, 2019

Memory control deficits in the sleep-deprived human brain.

Marcus O Harrington^1,2, Theodoros Karapanagiotidis³, Lauryn Phillips¹

¹Department of Psychology, University of York, York YO10 5DD, United Kingdom.

Proceedings of the National Academy of Sciences of the United States of America

|December 31, 2024

Summary

Sleep deprivation impairs prefrontal inhibition, leading to intrusive memories. Rapid eye movement (REM) sleep helps restore this control, improving memory regulation and thought patterns.

Keywords:

default mode network heart rate variability inhibitory control memory suppression sleep deprivation

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Establishing a Device for Sleep Deprivation in Mice

Establishing a Device for Sleep Deprivation in Mice

Published on: September 22, 2023

Area of Science:

Neuroscience
Cognitive Psychology
Sleep Science

Background:

Sleep disturbances are linked to intrusive memories, but underlying neurocognitive mechanisms remain unclear.
Understanding how sleep impacts memory control is crucial for mental well-being.

Purpose of the Study:

To investigate the neurocognitive mechanisms linking sleep deprivation to intrusive memories.
To explore the role of prefrontal inhibition and rapid eye movement (REM) sleep in memory regulation.

Main Methods:

Examined the effects of sleep deprivation on prefrontal inhibition of memory retrieval.
Assessed the relationship between overnight sleep, particularly REM sleep, and the restoration of inhibitory control.
Investigated behavioral deficits in memory downregulation and changes in self-generated thought patterns.

Main Results:

Sleep deprivation disrupts prefrontal inhibitory control over memory retrieval.
Overnight recovery of this inhibitory function correlates with time spent in REM sleep.
Impaired inhibition is associated with difficulty downregulating unwanted memories and disorganized thought.

Conclusions:

Sleep deprivation causes intrusive memories by disrupting mnemonic inhibitory control circuits.
REM sleep appears critical for restoring these neural circuits and maintaining cognitive control over memory.