National Institute of Health and by the US Department of Health and Human Services, carried out a research on women having complete spinal injuries.
The women involved in the study were given tests aimed at finding out their pain thresholds during vaginal or cervical self-stimulation. It was revealed that even those women who had a spinal-cord injury at the highest level did feel both vaginal and cervical stimulation. Some of them even reported having an orgasm.
These findings destroyed the conventional view which implies that spinal-cord injuries necessarily abolish such sensations. This made scientists suppose that there could exist an alternative pathway from the vagina and cervix to the brain called the vagus nerve which goes from the lowest part of the brainstem into the abdominal cavity without dealing with the spinal cord.
The only way to find out whether this hypothesis was right was to do brain imaging of women with spinal-cord injures and find out whether vaginal and cervical self-stimulation can activate medulla (the lowest part of the brainstem) which is known to link with the vagus nerve. The hypothesis was found to be true.
Many of these women even did not know they could have sexual enjoyment as they had been told by their doctors that they would not possible ever feel vaginal stimulation. These women even did not try to see if they could enjoy sexual stimulation, so this was the first time in years they tried vaginal stimulation. The women had great emotion and some of them even cried with happiness. They realized they could enjoy partner sex or sex toys, which, in fact, are not designed only for healthy people!
Other findings
Nervous system is a real enigma which still leaves much to be learnt about. This is especially true about internal organs: vagina, cervix and uterus which are incredibly complex. However, the past two decades brought a great deal of findings concerning neurotransmitters. /
For instance brain imaging, carried out in the research has revealed some more interesting facts:
1. Areas throughout the brain become activated by orgasm. This was considered to be the most dramatic finding. Tremendous utilization of oxygen throughout the brain during climax means that orgasm is good for the brain.
2. The part of the brain which is activated by cocaine becomes activated during orgasm. This means that orgasm influences the brain the same way as psychoactive drugs. As well orgasm activates two areas which get activated in response to pain. Vaginal stimulation and orgasm do block pain.
Now the scientists have a new area of research which implies showing women activity of their brains in real time in order to find out whether it can cure sexual problems - women stimulate themselves while being scanned their brains and watching a monitor. The scientists want to find out whether a woman who does not orgasm can intensify the right part of her brain voluntarily or if a woman suffering from persistent genital arousal can voluntarily reduce this activity.
In fact this is not as impossible as it might seem. People suffering from chronic pain can reduce pain by looking at the parts of their brains which respond to pain.