If orgasm is connected to fertility, then it might be predicted that it occurs differently at peak fertility. In this respect, it could be noted that it is possible to generate ejaculation and orgasms from a flaccid male penis by using sufficient direct stimulation. Although Masters and Johnsonfound no evidence of sperm insuck in their pioneering research, their methodology lacked key ingredients of ecological validity. Archives of Sexual Behavior. Go to mobile site. Instructions were that once a quota of orgasm or non-orgasm conditions had been achieved by random coin flip, then the remainder of the protocols would be of the missing condition.
Human female orgasm as evolved signal:
Measuring sperm backflow following female orgasm: a new method
Some orgasms are reported as being accompanied by deep internal sensations that could be the corollary of orgasmic function itself. There is some merit to this argument. This device allowed us to produce orgasms with the phenomenology of deep internal uterine peristalsis while controlling for amount of sperm simulant introduced — something that regular coition would not allow. From Britain's leading fertility expert, an intriguing question … Is a woman more likely to conceive if she enjoys sex? Improving reproductive efficiency of the breeding herd. Zubrow showed that just such a mortality difference in two overlapping populations would extinguish one of them within 30 generations — less than a millennium. None of the men had cardiovascular disease when they enrolled in the year study; of the men had erectile dysfunction and were analyzed separately.