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Orgasm is the conclusion of the plateau phase of the sexual response cycle, shared by both men and women. During orgasm, both men and women experience quick cycles of muscle contraction in the lower pelvic muscles, which surround both the anus and the primary sexual organs.
Orgasms in both men and women are often associated with other involuntary actions, including vocalizations and muscular spasms in other areas of the body. Also, a generally euphoric sensation is associated with orgasm.
Afterwards, orgasm generally causes perceived tiredness, and both men and women often feel a need to rest. This is recently attributed to the release of prolactin. Prolactin is a typical neuroendocrine response in depressed mood and irritation. A recent study at the University of Groningen has indicated significant differences in brain activity during the female and male orgasm. PET scans showed that both the female and male orgasm 'shut down' areas in the brain associated with anxiety and fear (the amygdala). It was found that the male orgasm focused the brain on sensory input from the genitals more than a female orgasm.
* 1 Human male orgasm
o 1.1 Orgasmic sensation
o 1.2 Male prostate orgasm
* 2 Dry Orgasm
o 2.1 Male multiple orgasms
* 3 Human female orgasm
o 3.1 Female multiple orgasm
o 3.2 The evolutionary purpose of orgasms
+ 3.2.1 Orgasm as vestigial
+ 3.2.2 Genetic basis of individual variation
o 3.3 Vaginal versus clitoral orgasms
* 4 Spontaneous orgasms
* 5 Anal orgasm
* 6 Simultaneous orgasm
o 6.1 Simultaneous orgasm and orgasmic dysfunction
* 7 Controversy: Definition of orgasm
* 8 Orgasmic dysfunction
* 9 Drugs and orgasm
* 10 Orgasm in Tantric sex
* 11 Orgasm in non-humans
* 12 Non-sexual meaning of the word "orgasm"
* 13 Books
* 14 Notes
* 15 See also
* 16 References in culture
o 16.1 Music
+ 16.1.1 Albums
# 220.127.116.11 Songs
* 17 External links
Human male orgasm
During orgasm, a human male experiences rapid, rhythmic contractions of the anal sphincter, the prostate, and the muscles of the penis. These contractions typically force stored semen to be expelled through the penis's urethral opening. The process generally takes from three to ten seconds, and is usually considered highly pleasurable.
Orgasm is achieved after direct stimulation of the penis for a period of time. This stimulation can be caused by sexual intercourse, manual masturbation, fellatio, or a sensual vibrator. Any sexual stimulation of the penis may eventually result in ejaculation and orgasm.
As a man ages, it is normal for the amount of semen he ejaculates to diminish, and hence, the length of time the man sustains orgasm also diminishes somewhat. This does not normally affect the pleasurable feeling of orgasm, but merely shortens its duration.
Following ejaculation, a refractory period usually occurs during which a man cannot achieve another orgasm. This period can be anywhere from less than a minute to over several hours, depending on age and other individual factors.
As a man nears orgasm during stimulation of the penis, he feels an intense pulsating sensation of neuromuscular euphoria. These highly pleasurable rhythmic pulses begin with a throb of the anal sphincter and travel to the tip of the penis. The pulses eventually increase in both speed and in intensity as the orgasm approaches, building up to a final "plateau" of pleasure which is sustained for several seconds. This plateau is what is referred to as the actual orgasm. It is during this time that semen is ejaculated and may continue to be ejaculated for a few seconds after the euphoric sensation gradually tapers off. It is believed that the exact feeling of "orgasm" varies from one man to another, but all agree that it is highly pleasurable.
Male prostate orgasm
Some men are able to achieve orgasm through stimulation of the prostate gland. Men reporting the sensation of prostate stimulation often give descriptions similar to women's accounts of G-spot stimulation. Other men report finding anal penetration or stimulation of any kind to be painful, or simply that they derive no pleasure from it. With sufficient stimulation, the prostate can also be "milked". Providing that there is no simultaneous stimulation of the penis, prostate milking can cause ejaculation without orgasm. When combined with penile stimulation, some men report that prostate stimulation increases the volume of their ejaculation. Sperm move at a slow steady rate from the testes to the prostate where they are ready for orgasm. Sperm is then expelled though the urethra.