Breast orgasm

From Wikipedia on 2012-05-27 we have:

In some women,
stimulation of the breast area during sexual intercourse and foreplay,
or just the simple act of having their breasts fondled,
creates mild to intense orgasms.
Research has suggested that
the sensations are genital orgasms caused by nipple stimulation,
and may also be directly linked to "the genital area of the brain," [54][70]
though at least one account has suggested that the orgasms radiate from the breasts. [71]
An orgasm is believed to occur in part because of the hormone oxytocin,
which is produced in the body during sexual excitement and arousal.
It has also been shown that oxytocin is produced
when a man or woman's nipples are stimulated and become erect.[72]

A study published in the July 2011 Journal of Sexual Medicine
was the first to map the female genitals onto the sensory portion of the brain,
and concluded that sensation from the nipples travels to the same part of the brain
as sensations from the vagina, clitoris and cervix.
"Four major nerves bring signals from women's genitals to their brains,"
said researcher Barry Komisaruk of Rutgers University.
"The pudendal nerve connects the clitoris,
the pelvic nerve carries signals from the vagina,
the hypogastric nerve connects with the cervix and uterus, and
the vagus nerve travels from the cervix and uterus
without passing through the spinal cord
(making it possible for some women to achieve orgasm
even though they have had complete spinal cord injuries)."
Komisaruk cited one reason for this possibility to be oxytocin,
which is also released during labor and triggers uterus contractions.
Nipple stimulation triggers uterine contractions,
which then produce a sensation in the genital area of the brain.
Komisaruk also relayed, however, that preliminary data suggests that
nipple nerves may directly link up with the brain,
skipping the uterine middleman,
acknowledging the men in his study
who showed the same pattern of nipple stimulation activating genital brain regions.[54]

Most women do not experience this effect when the breasts are stimulated.
According to one study that questioned 213 women,
29% of them had experienced an orgasm of this kind at one time or another.
[Otto, Herbert A. (1988) New Orgasm Options: Expanding Sexual Pleasure.]

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A comment by the author of this blog:
It would seem interesting if women
who have had and/or are capable of having such orgasms
would document exactly how they do it
(nowadays, perhaps with a video!).
This might be helpful in informing other women
who might like to experiment with such,
seeing if the reason that they had not experienced such orgasms
was a lack of the proper technique.