figure 13- 3
Measurements of erections during sleep
Research participant A, a man without erectile problems, has normal erections during REM sleep. Participant B has erectile problems that seem to be at least partly psychogenic— otherwise he would not have any erections during REM sleep. Participant C’s erectile disorder is related to organic problems, an interpretation supported by his lack of erections during REM sleep.
Measurements of erections during sleep
Research participant A, a man without erectile problems, has normal erections during REM sleep. Participant B has erectile problems that seem to be at least partly psychogeni
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