Orgasmic Contractions
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The most common type was a simple series of regular contractions. It had the shortest duration and fewest contractions.
The next most common pattern began with the regular series, followed by a number of irregular contractions. This type was longest in duration.
One man with a third type of intermediate duration, had a number of preliminary contractions before the series of regular contractions began in midorgasm.
Abstract Pelvic muscle contractions during sexual response can be monitored conveniently by the anal probe method described.
Publication types Research Support, U. Gov't, P. Vaginal contractions are caused by both the activity of certain brain regions and the release of the hormone oxytocin.
It has been suggested that vaginal contractions during orgasm can increase the chances of pregnancy as they transport sperm up the reproductive tract from the vagina to the oviducts, which decreases the distance it has to travel.
Additionally, when the woman is fertile, sperm is only transported to the side of the dominant ovary. Involuntary vaginal contractions may arise from non-sexual causes.
Involuntary spasm of the muscles around the vagina, usually caused by anxiety, can result in vaginismus. Vaginal contractions should not be confused with uterine contractions.
From Wikipedia, the free encyclopedia. Arch Sex Behav. Ceskoslovenska Psychiatrie. Archives of Sexual Behavior. Categories : Gynaecology Pleasure Vagina.
Namespaces Article Talk.
Electrical signals from an anal pressure probe were automatically digitized by computer. Orgasmic contractions were easily distinguished from voluntary contractions by the steadily increasing intervals and complete muscle relaxation between orgasmic contractions.
At orgasm each subject produced a characteristic series of contractions starting abruptly at an intercontraction interval of about 0.
Pressure amplitude, representing the force of contractions, increased from the beginning of the regular series to a maximum at the seventh or eighth contraction.
Area under the pressure curve, reflecting muscular exertion during contraction, generally increased throughout the regular series.
Each man's pattern of contractions was very similar from one session to the next and distinguished his records from others'. Individuals' patterns could be grouped into three types, based chiefly on the location of the regular contraction series within the subjective span of orgasm.
The most common type was a simple series of regular contractions. Vaginal contractions are caused by both the activity of certain brain regions and the release of the hormone oxytocin.
It has been suggested that vaginal contractions during orgasm can increase the chances of pregnancy as they transport sperm up the reproductive tract from the vagina to the oviducts, which decreases the distance it has to travel.
Additionally, when the woman is fertile, sperm is only transported to the side of the dominant ovary. Involuntary vaginal contractions may arise from non-sexual causes.
Involuntary spasm of the muscles around the vagina, usually caused by anxiety, can result in vaginismus. Vaginal contractions should not be confused with uterine contractions.
From Wikipedia, the free encyclopedia. Arch Sex Behav. Ceskoslovenska Psychiatrie. Archives of Sexual Behavior.
Categories : Gynaecology Pleasure Vagina. Namespaces Article Talk.
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