How memory replay in sleep boosts creative problem-solving
Open accessAbstract
Creative thought relies on the reorganisation of existing knowledge. Sleep is known to be important for creative thinking, but there is a debate about which sleep stage is most relevant, and why. We address this issue by proposing that rapid eye movement sleep, or 'REM', and non-REM sleep facilitate creativity in different ways. Memory replay mechanisms in non-REM can abstract rules from corpuses of learned information, while replay in REM may promote novel associations. We propose that the iterative interleaving of REM and non-REM across a night boosts the formation of complex knowledge frameworks, and allows these frameworks to be restructured, thus facilitating creative thought. We outline a hypothetical computational model which will allow explicit testing of these hypotheses.
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Dreaming appears to be an ideal stage to promote novel associations and eventually enhance creative insights.
“Dreaming appears to be an ideal stage to promote novel associations and eventually enhance creative insights, as previously suggested [9,18,42,43].”
From How Adversarial REM Dreams May Facilitate Creativity, and Why We Become Aware of Them (2024) · cites this paper as [9]
The section ‘A Role for REM in Boosting Creativity’ describes REM sleep as favorable for forming novel associations, and the paper links sleep-related processing to creative problem-solving. It does not establish that dreaming itself, rather than REM sleep or the alternation of REM and non-REM sleep, is the stage responsible for enhanced insight. Page numbers are unavailable in our copy. (LLM, conf=0.82)
Experimental — accuracy not yet measuredCreative and potentially realistic dreams may help the dreamer in creative problem solving after sleeping.
“Creative and potentially realistic dreams may help the dreamer in creative problem solving after sleeping [9,34,35].”
From How Adversarial REM Dreams May Facilitate Creativity, and Why We Become Aware of Them (2024) · cites this paper as [9]
The “Sleep and Creativity” section gives examples of dreams that inspired discoveries and says sleep promotes creative problem-solving. It does not address whether realistic dreams, specifically, help with problem-solving after sleep. (LLM, conf=0.82)
Experimental — accuracy not yet measuredDreams are constructed from a combination of various isolated, sometimes non-obviously related episodic fragments.
“Instead, dreams are constructed from a combination of various isolated, sometimes non-obviously related episodic fragments [8-10].”
From How Adversarial REM Dreams May Facilitate Creativity, and Why We Become Aware of Them (2024) · cites this paper as [9]
In “Interleaving REM and Non-REM Facilitates Creative Problem Solving” (page unavailable), the paper proposes that REM sleep can form connections between apparently unrelated memory-derived schemas. It does not say that dreams themselves are constructed from isolated episodic fragments; its account concerns memory processing and creative problem-solving. (LLM, conf=0.82)
Experimental — accuracy not yet measuredCreativity is nurtured by REM dreams.
“The second line of experimental investigation arises from the central claim that creativity is nurtured by REM dreams, as has previously been shown [9,18].”
From How Adversarial REM Dreams May Facilitate Creativity, and Why We Become Aware of Them (2024) · cites this paper as [9]
The ‘A Role for REM in Boosting Creativity’ section links REM sleep to novel associations and creative problem-solving. But the paper presents REM’s contribution as a proposed mechanism, not as a demonstrated effect of REM dreams; the ‘Sleep and Creativity’ section says which sleep stage matters most remains debated. Page numbers were not available in our copy. (LLM, conf=0.86)
Experimental — accuracy not yet measuredSleep not only quantitatively strengthens memory, but also qualitatively transforms past memory traces in a way that may help respond to similar events in the future.
“Yet critically, sleep not only quantitatively strengthens memory, but also qualitatively transforms past memory traces in a way that may help us respond to similar events in the future.”
From Constructive episodic simulation in dreams (2022) · cites this paper as [21]
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- Authors
- Lewis, P. A., Knoblich, G., & Poe, G.
- Affiliations
- Cardiff University (GB)
- Central European University (AT)
- University of California, Los Angeles (US)
- Corresponding author
- Lewis, Penelope A.
- Venue
- Trends in Cognitive Sciences
- Publisher
- Elsevier BV
- Published
- 2018-06
- Volume
- 22
- Issue
- 6
- Pages
- 491-503
- ISSN
- 1364-6613 (ISSN-L)
- PMC
- PMC7543772
- OpenAlex
- W2803177346
- Cited by
- 210
- References
- 81
- Citations by year
- 2026: 20 · 2025: 31 · 2024: 28 · 2023: 41 · 2022: 30 · 2021: 23 · 2020: 21 · 2019: 15 · 2018: 1
- FWCI
- 2.00
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Trends in Cognitive Sciences (publishedVersion)
- PubMed (publishedVersion)
- ORCA Online Research @Cardiff (Cardiff University) (acceptedVersion)
- PubMed Central (acceptedVersion)
- eScholarship (California Digital Library) (submittedVersion)
- ORCA Online Research @Cardiff (Cardiff University) (submittedVersion, cc-by-nc-nd)
- Funders
- Understanding creativity and problem solving through sleep-engineering (SolutionSleep) (681607, Cardiff University)
- UCLA
- NIH (MH60670)
- European Research Council (FP7/2007-2013, 609819)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Creativity in Education and Neuroscience
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
- Keywords
- memory replay, sleep, REM sleep, NREM sleep, creativity, creative problem solving, novel associations, sleep stages
- MeSH terms
- Animals, Brain, Creativity, Humans, Memory, Problem Solving, Sleep
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