| | MySleepCenter | | Impaired Sleep Related Penile Erections Men normally experience erections as a part of REM sleep. If erections are not present during REM sleep, this is an indication of impotence with a physical cause. Examining erections during REM sleep is one way that psychological and physiological impotence can be differentiated.This disorder is a type of parasomnia usually associated with REM sleep. | |
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