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Predictive Measures of Orgasm in Men, Women, and Spinally-Injured Participants.



Predictive Measures of Orgasm in Men, Women, and Spinally-Injured Participants, Eric Landry, Universite Laval, Canada; Fredrique Courtois, Marie-Pierre Gauthier, Sophie Bergeron, and Marc Belanger, Universite du Quebec a Montreal

To identify the predictive parameters of ejaculation ejaculation /ejac·u·la·tion/ (e-jak?u-la´shun) forcible, sudden expulsion; especially expulsion of semen from the male urethra.  and orgasm, we observed men, women, and spinally-injured (SCI (Scalable Coherent Interface) An IEEE standard for a high-speed bus that uses wire or fiber-optic cable. It can transfer data up to 1GBytes/sec.

(hardware) SCI - 1. Scalable Coherent Interface.

2. UART.
) subjects in direct comparisons during ejaculation or orgasm to characterize female orgasm through objective ejaculation and to compare SCI men with non-SCI men. Physiologic measures of sexual paroxysm paroxysm /par·ox·ysm/ (par´ok-sizm)
1. a sudden recurrence or intensification of symptoms.

2. a spasm or seizure.paroxys´mal


par·ox·ysm
n.
1.
 included heart rate (HR), blood pressure (BP), plethysmograph plethysmograph /ple·thys·mo·graph/ (ple-thiz´mo-grah) an instrument for recording variations in volume of an organ, part, or limb.

ple·thys·mo·graph
n.
 or vaginal probe, EMG EMG
abbr.
electromyogram


Electromyography (EMG)
A diagnostic test that records the electrical activity of muscles.
 of the bulbocavernous and abdominal muscles, and H-reflex. Three studies were performed, one with independent tests on men and women, one with repeated measures on men and women, and one with repeated measures on SCI men and non-SCI men. In a laboratory setting, 11 men and 11 women (non-SCI) were asked to self-stimulate to ejaculation or orgasm. Using the same measures, 2 men and 2 women (non-SCI) were repeatedly tested on 6 occasions to control for within-subject variance. Also, 2 SCI and 2 non-SCI men were repeatedly tested on 5 occasions using the FertiCare vibrator vibrator /vi·bra·tor/ (vi´bra-tor) an instrument for producing vibrations.

vibrator

an apparatus used in vibratory treatment.
. Results showed significant changes from ANOVAs analysis, in men and women, on HR, BP, pletysmograph or vaginal probe, EMG measures of bulbocavernous, and abdominal muscle (frequency and amplitude) at ejaculation or orgasm. H-reflex decreased significantly at ejaculation or orgasm and rapidly returned to baseline. SCI men exhibited a decrease rather than increase in HR at ejaculation, and BP was slower to return to baseline than in non-SCI subjects. H-reflex similarly decreased in men and women at ejaculation and orgasm but slowly returned to baseline for SCI men. This study validates the multiple measures of orgasm and introduces the H-reflex as a valid tool to predict ejaculation in both SCI and non-SCI subjects.
COPYRIGHT 2006 Society for the Scientific Study of Sexuality, Inc.
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Title Annotation:study
Publication:The Journal of Sex Research
Article Type:Brief Article
Geographic Code:1CANA
Date:Feb 1, 2006
Words:292
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