The reason each person had sexual intercourse varied and complex. What happens in the brain when someone is having an orgasm? Orgasm is a sudden movement, contraction and a wave of sexual arousal. But sometimes not everyone can achieve orgasm with a maximum. In this case the brain plays a major role to achieve an orgasm the body sends messages to the brain. Without the nerves that transmit impulses to the spinal cord and brain, then the orgasm would not be possible.
Same with other parts of the body, genital area (genital) also contains various nerve that can transmit information to the brain to tell the sensations being experienced. This also explains why the sensation of orgasm is different because it depends on which area is touched and nerves involved. All genitalia have a large nerve endings that will ultimately be connected to a large nerve to the spinal cord.
As quoted from HowStuffWorks, there are several nerves that is responsible for stimulation in the genital area, namely:
1. Hypogastric nerve, that serves to transmit stimuli from the cervix in women and of prostate in men.
2. Pelvic nerve, stimulation transmit function of the vagina in women and of the rectum in men.
3. Pudendal nerve, which transmits the stimulus function of the clitoris in women and the scrotum in men.
4. Vagus nerve, which functions to transmit stimuli from the cervix, uterus and vagina.
During the sexual stimuli, then different regions of the brain will receive all this information and allows for the orgasm and a very pleasant sensation. In the late 1990s, scientists from the University of Groningen in the Netherlands to do some research to determine brain activity during sexual stimulation. The team used PET scans to observe the different regions of the brain that will light up and die during sexual activity. Was found not too many differences between men and women. "Regional brain behind the left eye, called the lateral orbitofrontal cortex will shut down during orgasm. This is a reasonable area and control behavior, so if you're having an orgasm would lose control," said R. Janniko Georgiadis, one of the researchers. Meanwhile, according to Dr. Gert Holstege of the brain a person who is having an orgasm about 95 percent the same as when people use heroin.
But there are some differences encountered. When a woman having sex, part of the brain stem called eriaqueductal gray (PAG) is activated that serves to control the response of pleasure or fight. In addition, women's brains also showed decreased activity in the amygdala and hippocampus, which is associated with fear and anxiety. Researchers argue that these differences are because women have more need to feel safe and relaxed in enjoying sex. As well as cortical regions associated with pain activated in women, this shows there is a clear relationship between pain and pleasure.
The study also shows, although women can cheat their partners in terms of achieving orgasm, but his brain continued to show the truth. When women were asked to fake an orgasm, the brain activity in cerebelum and other areas related to controlling the movement will increase. And the scans showed no brain activity similar to women who experience real orgasms. Meanwhile there are also people who could feel the orgasm but not from genital stimulation such as touching on the nipple. The researchers believe that the sensations that are sent from nipple stimulation will provide the same information by stimulation of the genitals.
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