Some characteristics of nocturnal penile tumescence in elderly males.
D000368:Aged; D004569:Electroencephalography; D004585:Electrooculography; D006801:Humans; D008297:Male; D008875:Middle Aged; D010413:Penis / Q000033:anatomy & histology / Q000502:physiology*; D012890:Sleep; D012894:Sleep Stages; D012895:Sleep, REM; D013997:Time Factors