Don't be so mean. I'm sure we all want to know what it means.
The thing is, if you are an adult, and you haven't figured out what it means yet, it would be a waste of time to try and explain it. For example, hypnosis is a well studied, scientific concept, yet some simply resist any evidence that it even exist. Why bother to educate someone with that level of woo thinking?
The imaging studies also showed increased activation in two other brain structures -- the left anterior cingulate cortex and the basal ganglia. The researchers speculate that increased activity in these two regions may be part of an inhibition pathway that blocks the pain signal from reaching the higher cortical structures responsible for pain perception. However, Schulz-Stubner noted that more detailed fMRI images are needed to definitively identify the exact areas involved in hypnosis-induced pain reduction, and he hoped that the newer generation of fMRI machines would be capable of providing more answers.
"Imaging studies like this one improve our understanding of what might be going on and help researchers ask even more specific questions aimed at identifying the underlying mechanism," Schulz-Stubner said. "It is one piece of the puzzle that moves us a little closer to a final answer for how hypnosis really works.
"More practically, for clinical use, it helps to dispel prejudice about hypnosis as a technique to manage pain because we can show an objective, measurable change in brain activity linked to a reduced perception of pain," he added.
http://www.sciencedaily.com/releases/2005/03/050326100346.htm
Only in the past 40 years have scientists been equipped with instruments and methods for discerning the facts of hypnosis from exaggerated claims. But the study of hypnotic phenomena is now squarely in the domain of normal cognitive science, with papers on hypnosis published in some of the most selective scientific and medical journals. Of course, spectacles such as "stage hypnosis" for entertainment purposes have not disappeared. But the new findings reveal how, when used properly, the power of hypnotic suggestion can alter cognitive processes as diverse as memory and pain perception.
http://www.sciam.com/article.cfm?articleID=0008D31F-BD5B-1C6F-84A9809EC588EF21
Long article, well worth reading. PET scans as well as MRI have shown with out a doubt that hypnotic states exist, can be measured, and can't be "faked". Of course some people don't accept this, but what can you do?
Plenty of studies on PubMed as well. But don't listen to real scientist, just go with some anonymous "skeptic" who assures you hypnosis is all fakery, after all, skeptics know everything, and real scientist, with their fancy tests and machines and stuff, are dumb.
One can argue about anything. Some people still think diet has nothing to do with health, or that hypnosis is bunk. What can you do?
One version of the Stanford scales, for instance, consists of a series of 12 activities--such as holding one's arm outstretched or sniffing the contents of a bottle--that test the depth of the hypnotic state. In the first instance, individuals are told that they are holding a very heavy ball, and they are scored as "passing" that suggestion if their arm sags under the imagined weight. In the second case, subjects are told that they have no sense of smell, and then a vial of ammonia is waved under their nose. If they have no reaction, they are deemed very responsive to hypnosis; if they grimace and recoil, they are not.
This illustrates why a hypnotic "trance", or state, differs from relaxation. No matter how relaxed you are, a vial of ammonia isn't something you ignore. In fact, it is a method to bring somebody back to awareness. It can even wake you out of a sound sleep, at the very least there is a recoil from the ammonia, even while sound asleep.
Hypnosis is "
a trancelike state that resembles sleep but is induced by a person whose suggestions are readily accepted by the subject"
Merriam-Webster Online Dictionary
I guess most people just accept that hypnosis is what the definition says it is. The Stanford Scale measures how strong the suggestions are accepted.