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the claim

Morning erections (nocturnal penile tumescence) occur during REM sleep cycles regardless of whether the dream content is sexual.

the verdict
INSUFFICIENT LEANING
Recorded sources
5 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that morning erections (nocturnal penile tumescence) occur during REM sleep cycles regardless of whether the dream content is sexual?

Unclear. Several sources confirm that nocturnal penile tumescence and morning erections occur and are linked to REM sleep, but none of the retrieved items addresses whether the accompanying dream content is sexual or not. The evidence therefore covers only part of the claim.

Verdict: PARTIAL LEAN · 5 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 5
Nocturnal penile tumescence - Wikipedia
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Nocturnal penile tumescence - Wikipedia. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Nocturnal_penile_tumescence

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More for · 4
[Urinary tract symptoms and erectile dysfunction in obstructive sleep apnea: Systematic review].
2020
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Clerget, A., Kanbar, A., & Abdessater, M. (2020). [Urinary tract symptoms and erectile dysfunction in obstructive sleep apnea: Systematic review].. doi.org. https://doi.org/10.1016/j.purol.2020.07.244

Sleep-related painful erection, erectile dysfunction and psychological distress
2026
Get citation
Fiala, L., Fiala, L., Fiala, L., Fiala, L., Lenz, J., & Lenz, J. (2026). Sleep-related painful erection, erectile dysfunction and psychological distress. doi.org. https://doi.org/10.3389/fpsyt.2026.1778388

Sleep-related erections throughout the ages.
2014
Get citation
Driel, M. F. v. (2014). Sleep-related erections throughout the ages.. doi.org. https://doi.org/10.1111/jsm.12557

Oestrogen-androgen crosstalk in the pathophysiology of erectile dysfunction.
2003
Get citation
Srilatha, B. & Adaikan, P. G. (2003). Oestrogen-androgen crosstalk in the pathophysiology of erectile dysfunction.. pubmed.ncbi.nlm.nih.gov. https://pubmed.ncbi.nlm.nih.gov/14695981/

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