I had a one powerful Kundalini experience -- but I didn't realize until years after it happened that was what it must have been.
This was a while ago... about 8 or 9 years ago, but I still remember it quite well.
I was very interested in spirtuality at that time in my life, and was exploring mediatition, and having a direct relationship with God/Universe. One night I was mediatating, and I was going pretty 'deep' , is one word that I can think of to describe it.
I felt my awarness growing of my surroundings...not much longer after that I began to feel an incredible energy growing, at the base of my spine. The energy began to rise up my spine. As it, I felt less connection of my body.
The energy was incredible. It felt like pure electricty; pure voltage. Like my spine got plugged into a wall socket. It was a long time ago but I can still remember how intense it was. It honestly felt like I had about 100 volts running up and down my body. My ears began to ring a little bit, and I began to get somewhat frightened, as this had never happened before in my mediatations.
Once the electricity travelled the length of my spine, and reached my head, I had a intense spirtual experience. A white figure -- well, certainly a spirit -- materialized above me (I was lying down in my bed.) It was both translucent and phorsphoresecent and glowing. It was about 1.5-2 metres from my face.
Ya I know this may sound unbelievable, but it is the truth, believe it or not (I'm only sharing this because of the anonymous nature of this message board...I'd never tell this to someone casually, in person.) Seeing the spirit gave me a sheer, animal panic -- although logically I would assume the spirit to be friendly, at the time, it was a terrifying experience, and completely unexpected.. as if I entered my kitchen and ran into a polar bear. It was sheer terror. I ended the meditation as soon as I could.
As I was saying, it wasn't until years later that I read about the Kundalini energy and realized that that was happened. While spirtuality has always been important to me , I 've never really wanted to explore this experience any further. But I can certainly attest that it is real.
I haven't read any Kundalini literature in a long time, but basically , I would describe the experience (to people that don't have much meditation background) as plugging yourself into a higher reality by connecting your base chakra to some sort of power network that makes up our universe.