For info on this subject check out my HIT theory on
www.wakeupinyourdreams.com
I come in peace

and I hope to learn as much as I hope to share my own view on this subject.
Furthermore, I hope to learn as much as I share on this post and honestly am looking froward to your insights on this topic as I can see we've got some genuinely very clever contributors on this forum so please, with the utmost respect I will ask you to join in and lets have a good knock around on this one.
As for the relevance to martial arts, please bear with me on this and I hope, for those of you who do not instantly make the connection that this will be unfolded in appropriate time.
Lets Begin.....,
When we dream, for most of us mere mortals it is in effect an experience that we are only aware of subsequent to the event itself. That is to say, during the dream we are not consciously engaging the event but merely observing it in an autopilot like fashion. We do not make conscious decisions parse and we do not typically intentionally exercise control over the events of the dream.
A lucid dream occurs when we become aware during the dream experience that we are dreaming. We consciously become self aware in the dream and with experience we can learn to exert a degree of control on the dream events.
We have all experienced levels of consciousness but a full on lucid dream when experienced will not leave you guessing as to what just happened. It is a profound experience and for many people quite life changing.
At this point one may ask how can such an event be proved, firstly to oneself that this is in fact a lucid dream and secondly to the empirical evaluator as to whether or not such a state of consciousness can be achieved.
The answer to both is a thankful yes. It is possible to know you are definitely in a lucid dream and yes you can prove it to an evaluator!
Lets look at these concepts the way I encountered them in my experience. I first read about lucid dreaming a number of years ago when I was studying hypnosis and I came accross a most interesting article on an American scientist named Steve LaBerge and how he was able to prove to cynical scientists that it was possible to enter a state of consciousness whereby one could actually be awake in a dream and could experience the dream as a kind of mental virtual reality which with experience could be manipulated to create an almost infinite experience with full conscious engagement.
Let me be frank, I'm a sceptic but something about the article really caught my eye - he showed how he proved it and I just thought wow - this is real - I've got to get involved.
Proof - When we are sleeping it is possible to monitor brain wave function by using what is known as a electroencephalograph (EEG). With this apparatus it is possible to determine what stage of sleep someone is in.
By using this the sleep state and moreover likely dream state can be determined without the subject faking it.
During certain type dream sleep (type 2 or procedural dreams (the ones we normally consider dreams) the body is paralysed apart from the smooth or involuntary muscles need to pump the heart, breath and so forth. However there is also an amount of control available to the eyes. That is to say, the eyes can move under a degree of voluntary control under our influence if one was to consciously do so.
Knowing this LaBerge, on becoming lucid in the dream was able to signal prearranged movements of the eyes to let the observers know he had become lucid.These eye movements in turn can be monitored by using various types of retinal monitoring techniques
It turned out that LaBerge wasn't the only scientist using this method at this time but he was the one who really brought the subject to public attention.
I realise this is a little ABC for a number of you but I would appreciate any feedback at this point to make sure we're on the same song sheet as I would propose to open up the notion of how we become lucid and show you my model of this event which though not ground breaking should certainly be a bit of food for thought even for those of you who already practice.