Efficiency
13 experiments was did which have seven couples (around three couples did one or two experiments for each) and three single people. The latest desk suggests ages, weight/peak index, parity, types of birth control, girls climax (yes/no), as well as the depth of penetration (limited or complete). Zero ladies reported having a great “g-spot” otherwise creating lady climax throughout climax. To your a couple of Saturdays during the 1991 (experiments 1 and 2) the original pair succeeded with over entrance that endured well enough a lot of time with the photographs to be taken. Brand new Philips 1.5 Tesla magnetic system during the time required a relatively enough time order big date (52 seconds) along with a comparatively bad laws:audio ratio. This provided poor photos with quite a few movement artefacts. In the 1996 the brand new Siemens Eyes step 1.5 Tesla magnetic system turned available and you can given the ability to remain all of our look for sharp photographs. Half dozen people been successful inside the partial, although maybe not complete, entrance (experiments step 3 and eight-11). For the 1998 sildenafil (Viagra) turned into in the netherlands. The 2 lovers when you look at the tests 9 and you will 11 was desired so you’re able to repeat the method an hour or so after the guy had drawn you to twenty-five milligrams tablet of sildenafil. They succeeded having complete entrance you to definitely lasted for enough time (twelve seconds) getting sharp images you need to take (tests several and 13).
Figure ? Figure3 3 reveals a midsagittal picture of new anatomy out-of sexual intercourse to your lady lying for her as well as the person on top of this lady
The root of the manhood (1/step three of your own length) and erect pendulous muscles (2/3 of the length) are noticeable. The fresh pendulous the main vertical dick moved up at the a keen angle of approximately 120° on the root of the penis, and you can nearly synchronous into woman’s back. In every the new experiments which trend occurred in which coital status and was not regarding the fresh new depth from entrance. In the over penetration the penis chock-full 
the prior fornix (studies step one, dos, and you will thirteen) or perhaps the posterior fornix (test a dozen; fig ? figstep 3). step 3 ). Throughout intromission brand new pubic bones of your guys therefore the ladies don’t approach each other closely: the feminine pubic bones existed regarding 4 cm cranial to that of your male. The fresh new uterus spent my youth by the dos.4 cm. This new altered setup of kidney try considering genital stretching of your anterior genital wall surface while in the intromission, additionally the raising of your womb while the escalation in kidney proportions whilst occupied.
Midsagittal picture of the newest anatomy out-of sexual activity envisaged of the R L Dickinson and taken because of the Roentgen S Kendall step three
New volunteers was indeed shown the equipment from the a couple of bedroom, and personal and you can gynaecological records had been drawn. The latest experimental procedure was said, and all of investigators remaining the new imaging room. Just after a preliminary image getting location the real hips of the lady are drawn, the original image is taken together lying for her back (visualize step 1). Then male are questioned to help you rise on the tubing and initiate face to face coitus regarding advanced reputation (photo dos). Following this attempt-effective or otherwise not-the guy is questioned to go away the fresh new tube plus the lady try asked so you’re able to turn on the woman clit yourself and to improve the latest boffins of the intercom whenever she got hit the fresh preorgasmic stage. Up coming she averted the latest autostimulation to own a 3rd photo (photo step 3). Following image try removed this lady restarted the fresh stimulation so you’re able to go a climax. Twenty minutes after the orgasm, new last visualize is actually removed (image 4). After the experiment, the pictures was evaluated regarding exposure of your own members.