Psychiatry General 597e7028

Not true about nocturnal penile tumescence is -

Totals about 100 min / night

Normal phenomenon

Occurs in NREM sleep

Can be used to distinguish between psychological or organic impotence

High-Yield Explanation

Nocturnal penile tumescence occurs in REM sleep. It is a normal phenomenon and occurs for 80-120 minutes per night. It can differentiate psychogenic impotence from organic impotence.

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