Nocturnal penile tumescence is a normal physiological response occurring during REM sleep stages

the verdict

SUPPORTED

the evidence backs this

Recorded sources

3 sources for · 0 against

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

Nocturnal penile tumescence is a well-documented physiological phenomenon that consistently occurs during rapid eye movement (REM) sleep in healthy males.

The analysis

The retrieved literature consistently supports the claim that nocturnal penile tumescence is a normal physiological response linked to REM sleep across various age groups and populations. There are no papers refuting this physiological connection.

Evidence for · 3

Sleep-related erectile activity.

Recorded source metadata

M Hirshkowitz, C A Moore. Sleep-related erectile activity.. 1996. https://doi.org/10.1016/s0733-8619(05)70282-6

Paper 0 establishes that sleep-related erections occur in healthy men in close temporal association with REM sleep.

Source citation format

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More for · 2

REM sleep determined using in utero penile tumescence in the human fetus at term.

Recorded source metadata

T Koyanagi, N Horimoto, H Nakano. REM sleep determined using in utero penile tumescence in the human fetus at term.. 1991. https://doi.org/10.1159/000251014

Paper 3 demonstrates that fetal penile tumescence is strongly associated with REM sleep periods.

Source citation format

Nocturnal penile tumescence in healthy aging men.

Recorded source metadata

R C Schiavi, P Schreiner-Engel. Nocturnal penile tumescence in healthy aging men.. 1988. https://doi.org/10.1093/geronj/43.5.m146

Paper 5 examines nocturnal penile tumescence in healthy aging men and confirms its occurrence during sleep stages.

Source citation format

The paper trail · every fact has a biography

first checked01 Aug 2026

judged → SUPPORTED · 7501 Aug 2026

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