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Mechanisms of memory under stress
Lars Schwabe1, Erno J Hermans2, Marian Joëls3
1Department of Cognitive Psychology, Universität Hamburg, Hamburg, Germany.
Neuron
|March 22, 2022
Summary
Stress significantly impacts memory by altering brain networks. New research reveals how stress mediators, like endocannabinoids, cause time-dependent shifts, affecting memory specificity and flexibility.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Molecular Biology
Background:
- Stress profoundly affects memory through various brain mediators.
- Recent advances illuminate cellular, neural network, and cognitive mechanisms of stress on memory.
Purpose of the Study:
- To provide an integrative framework linking cellular, systems, and cognitive mechanisms of acute stress on memory.
- To identify potential therapeutic targets for stress-related memory disorders.
Main Methods:
- Review and synthesis of recent discoveries on stress mediators (corticosteroids, catecholamines, peptides, endocannabinoids).
- Analysis of time-dependent shifts in large-scale neural networks induced by stress.
- Integration of cellular, systems, and cognitive levels of analysis.
Main Results:
- Stress mediators, including endocannabinoids, interact intricately to induce time-dependent neural network shifts.
- Stress-induced network alterations facilitate specific long-term memory of stressful events.
- Transient impairments in mnemonic flexibility occur during and shortly after stress.
Conclusions:
- An integrative framework is proposed, connecting molecular, neural, and cognitive aspects of stress effects on memory.
- Understanding these mechanisms offers potential therapeutic targets for stress-related mental disorders affecting memory.
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