Cited by 95Sleep and Wakefulness ResearchCreativity in Education and NeuroscienceSleep and related disorders

Sleep onset is a creative sweet spot

Open access
Lacaux, Célia, Andrillon, Thomas, Bastoul, Céleste, Idir, Yannis, Fonteix-Galet, Alexandrine, Arnulf, Isabelle, Oudiette, Delphine·2021·Science Advances

Abstract

= 103) were exposed to mathematical problems without knowing that a hidden rule allowed solving them almost instantly. We found that spending at least 15 s in N1 during a resting period tripled the chance to discover the hidden rule (83% versus 30% when participants remained awake), and this effect vanished if subjects reached deeper sleep. Our findings suggest that there is a creative sweet spot within the sleep-onset period, and hitting it requires individuals balancing falling asleep easily against falling asleep too deeply.

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Crossref · 10.1126/sciadv.abj5866

Cites

45 of 45 references verified0 citation errors · 0 not checkable

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  • Creative 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 [35]

    The Results (‘A single minute of N1 inspires insight’; page not provided) show that participants who entered the first stage of sleep were more likely to solve the task after the break. But the Results (‘A reliable marker of sleep onset’) found no effect of hypnagogic experiences, including task-related ones, on insight, and the Discussion says their role remains an open question. The paper therefore supports a benefit of sleep onset, not the proposed benefit of dreams or their being realistic. (LLM, conf=0.86)

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  • Creative problem solving is boosted in the first NREM sleep stage (N1) by exploiting Edison's technique, or by simply closing the eyes during active imagination.

    “Since creative problem solving is also shown to be boosted in the first NREM sleep stage (N1, [35]) by exploiting Edison's technique, or by simply closing the eyes [46] during active imagination”

    From How Adversarial REM Dreams May Facilitate Creativity, and Why We Become Aware of Them (2024) · cites this paper as [35]

    The Results and Discussion support improved problem-solving insight after N1 sleep and say Edison’s technique appears to help keep participants in N1 rather than deeper sleep. The Discussion cautions that a control experiment without the bottle is needed before concluding that the technique itself fosters insight. The separate claim about closing the eyes is cited to [46], not this source. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Creative problems are easier solved on the verge of falling asleep and being awakened from the first stage of NREM sleep (N1), as opposed to being awakened from the second stage of NREM sleep (N2) or staying awake throughout.

    “Experimental examination confirmed this anecdotal evidence and revealed that creative problems are easier solved on the verge of falling asleep and being awakened from the first stage of NREMsleep (N1), as opposed to being awakened from the second stage of NREM sleep (N2) or staying awake throughout [35].”
  • In hypnagogic/hypnopompic states the brain tends to forge unusual out of the box semantic connections between otherwise semantically disparate concepts.

    “In these transitional states the brain tends to forge unusual out of the box semantic connections between otherwise semantically disparate concepts.”

    From Prodromal dreams (2025) · cites this paper as [87]

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Research works printed but not linked: 3

  1. [31]T. Hori, M. Hayashi, T. Morikawa, in Sleep Onset: Normal and Abnormal Processes (American Psychological Association, 1994), pp. 237–253.
  2. [34]R. B. Berry, R. Brooks, C. E. Gamaldo, S. M. Harding, C. Marcus, B. V. Vaughn, The AASM manual for the scoring of sleep and associated events. Rules Terminol. Tech. Specif. Darien Ill. Am. Acad. Sleep Med. 176, 2012 (2012).
  3. [45]S. L. Schneider, in Class and Stratification Analysis (Emerald Group Publishing Limited, 2013), vol. 30 of Comparative Social Research, pp. 365–379.

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Authors
Lacaux, C., Andrillon, T., Bastoul, C., Idir, Y., Fonteix-Galet, A., Arnulf, I., & Oudiette, D.
Affiliations
Centre National de la Recherche Scientifique (FR)
Corresponding author
Oudiette, Delphine
Venue
Science Advances
Published
2021-12-10
Volume
7
Issue
50
Pages
eabj5866-eabj5866
ISSN
2375-2548 (ISSN-L)
OpenAlex
W4200209886
Cited by
95
References
45
Citations by year
2026: 10 · 2025: 37 · 2024: 20 · 2023: 16 · 2022: 11 · 2021: 1
FWCI
6.31
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Science Advances (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
  • OSF Preprints (OSF Preprints) (submittedVersion)
  • Archive ouverte UNIGE (University of Geneva) (submittedVersion, cc-by)
Funders
Agence Nationale de la Recherche (ANR-10-IAHU-0006)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Creativity in Education and Neuroscience
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
Keywords
sleep onset, N1 sleep stage, mathematical problem solving, creative problem solving, sleep-dependent memory consolidation, sleep depth, restorative sleep

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