Sleep and emotional memory processing
Open accessAbstract
Cognitive neuroscience continues to build meaningful connections between affective behavior and human brain function. Within the biological sciences, a similar renaissance has taken place, focusing on the role of sleep in various neurocognitive processes, and most recently, the interaction between sleep and emotional regulation. In this article, we survey an array of diverse findings across basic and clinical research domains, resulting in a convergent view of sleep-dependent emotional brain processing. Based on the unique neurobiology of sleep, we outline a model describing the overnight modulation of affective neural systems and the (re)processing of recent emotional experiences, both of which appear to redress the appropriate next-day reactivity of limbic and associated autonomic networks. Furthermore, a REM sleep hypothesis of emotional-memory processing is proposed, the implications of which may provide brain-based insights into the association between sleep abnormalities and the initiation and maintenance of mood disturbances.
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NREM sleep is required for optimal wakefulness and cognitive function the following day.
“REM sleep occurs after slow-wave sleep and allows for emotional memory processing, while NREM sleep is required for optimal wakefulness and cognitive function the following day [19,20,21,22,23].”
From The Cyclical Battle of Insomnia and Mental Health Impairment in Firefighters: A Narrative Review (2024) · cites this paper as [20]
The section “Sleep loss, mood stability and emotional brain (re)activity” says sleep deprivation impairs attention and alertness, supporting a general link between sleep and waking function. The “Sleep” section describes NREM sleep but does not establish that NREM specifically is required for optimal next-day wakefulness or cognitive function. Page numbers were not available in our copy. (LLM, conf=0.78)
Experimental — accuracy not yet measuredSleep plays an important role in memory consolidation.
“Both animal and human studies have shown that sleep plays an important role in memory consolidation (Van der Helm & Walker, 2011).”
From Using sleep to enhance exposure treatment for anxious children: A pilot study. (2026) · cites this paper as Van der Helm & Walker, 2011
The “Sleep and Affective Memory Consolidation” section reports human studies in which sleep benefited memory consolidation, particularly for emotional material. It supports the central point, but the passages do not establish the citing sentence’s additional assertion that animal studies have shown this. (LLM, conf=0.82)
Experimental — accuracy not yet measuredREM sleep occurs after slow-wave sleep and allows for emotional memory processing.
“REM sleep occurs after slow-wave sleep and allows for emotional memory processing, while NREM sleep is required for optimal wakefulness and cognitive function the following day [19,20,21,22,23].”
From The Cyclical Battle of Insomnia and Mental Health Impairment in Firefighters: A Narrative Review (2024) · cites this paper as [20]
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“Both animal and human studies have shown that sleep plays an important role in memory consolidation (Van der Helm & Walker, 2011).”
- Authors
- van der Helm, E., & Walker, M. P.
- Affiliations
- University of California, Berkeley (US)
- Corresponding author
- Walker, Matthew P.
- ORCID
- Walker, Matthew P.
- Venue
- Sleep Medicine Clinics
- Publisher
- Elsevier BV
- Published
- 2011-03
- Volume
- 6
- Issue
- 1
- Pages
- 31-43
- ISSN
- 1556-407X (ISSN-L)
- PMC
- PMC4182440
- OpenAlex
- W2112401817
- Cited by
- 102
- References
- 89
- Citations by year
- 2026: 8 · 2025: 13 · 2024: 9 · 2023: 7 · 2022: 9 · 2021: 3 · 2020: 8 · 2019: 23 · 2018: 4 · 2017: 3 · 2016: 4 · 2015: 5 · 2014: 2 · 2013: 4
- FWCI
- 0.97
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Sleep Medicine Clinics (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institute on Aging (R01AG031164)
- National Institute of Mental Health (R01MH093537)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
- Keywords
- sleep, emotional memory, emotion regulation, REM sleep, memory consolidation, limbic system, autonomic nervous system, mood disturbance, sleep abnormalities
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