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the claim
Audio played during REM sleep can improve memory recall.
the verdict
CONTESTED
contested - the weight sits with the supporting side
refutedsupported
the weight of evidence
2 sources for · 1 against

Studies investigating targeted memory reactivation via audio played during REM sleep have produced conflicting results, with some finding positive associations with performance improvement and others finding no significant effect on recall.

The evidence we hold leans leans supported

How this was weighed

official record 3x · fact-check 2x · hedged 1x · crowd & reference 1x

  • peer-reviewed literature · peer-reviewed · supports · weight 1.3 · 2023
  • peer-reviewed literature · peer-reviewed · supports · weight 1.3 · 2021
  • OpenAIRE · peer-reviewed · refutes · weight 1 · 2025
Evidence for · 2
Targeted memory reactivation in human REM sleep elicits detectable reactivation
2023 · cited by 31
Targeted memory reactivation using sounds in human REM sleep positively predicted overnight performance improvement.
Evidence against · 1
OpenAIRE: Enhanced incubation: using day-time video to enhance incorporation of nighttime dream cues and lucid dreaming
2025 · cited by 0
Study found that audio stimuli played during REM sleep did not increase recall of the related subject matter.
See more details
The analysis

Judged against the evidence record for claims of this kind.

More for · 1
Targeted memory reactivation in human REM sleep elicits detectable reactivation
2021 · cited by 15
Re-presenting sounds during REM sleep (targeted memory reactivation) positively predicted overnight performance improvement.
Everything we examined (11) — 9 independent sources
This check searched the claim as stated. It did not run a separate search for evidence against it.
  1. Wikipedia: Memoryreferenceno side takennot shown: read and judged not to bear on this claim
  2. Book: Why We Forget and How To Remember Betterreferenceno side takennot shown: read and judged not to bear on this claim
  3. Book: Music and Sleepreferencesame source L3no side takennot shown: read and judged not to bear on this claim
  4. Book: Handbook of Sleep Researchreferencesame source L3no side takennot shown: read and judged not to bear on this claim
  5. Book: Intelligent Systems for Science and Informationreferenceno side takennot shown: read and judged not to bear on this claim
  6. Book: Sleep and Dreamingreferenceno side takennot shown: read and judged not to bear on this claim
  7. OpenAIRE: Enhanced incubation: using day-time video to enhance incorporation of nighttime dream cues and lucid dreamingpeer-reviewedrefutes
  8. OpenAIRE: Dream incorporation of external stimuli in the home sleep environment: a pilot studypeer-reviewedno side takennot shown: read and judged not to bear on this claim
  9. OpenAIRE: How Bizarre: The Glitch of the Nineties as a Fantasy of New Authorshippeer-reviewedno side takennot shown: read and judged not to bear on this claim
  10. Targeted memory reactivation in human REM sleep elicits detectable reactivationpeer-reviewedsame source L9supports
  11. Targeted memory reactivation in human REM sleep elicits detectable reactivationpeer-reviewedsame source L9supports
The paper trail · every fact has a biography
first checked06 Aug 2026
judged → CONTESTED · 5006 Aug 2026
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