Kevin_Lowe said:
Sorry, I didn't get what you were driving at.
Apparently it's quite distinctive. You feel a coolness, often a sense of euphoria or a belief that you have somehow become one with the universe, you lose a lot of your mental habits, and the high lasts for some time. I haven't felt it myself, but I'm a very old friend of someone who has. Apparently if you need to ask whether it has happened, it hasn't.
Different religious traditions give different names to what happens when your brain wigs out after you spend too long chanting rubbish, and the brain doesn't know the difference between an Eastern mantra and a Christian prayer. Christians would call it "a religious experience" or "being stricken with the holy spirit" or something like that, and other people call it satori.
My belief is that the descriptions of what happens, and how you induce the event, are so damn similar between traditions that it's very likely indeed that exactly the same phenomenon has occurred in each case.
As I said (and others agreed) earlier enlightenment is a distinctive, physical event in a squishy, meaty brain. It's not a gateway to Truth, nor does any religious tradition have a monopoly on it.
For what it's worth.... I spent quite a bit of time in zazen in my late teens/early twenties. None of this koan nonsense, or irrationalities, just following my breath, and eventually, just sitting. No big deal, nothing to write home about. Anyway, one day I had a motorcyle accident. Could have been a big deal, but other than ending up on crutches for awhile I walked away from it. I was mostly (pychologically) numb for a few hours following it - the trip to the hospital, xrays, all that.
Coming home - BAM! Everything dropped away and I started giggling nonstop. I could go on and on in words but what's the point? I don't say that in any mystical way, but how do you describe love in words, or any feeling/emotion/brain state? Can't really be done. Anyway, so far as I can tell this was what they call a "tip of the tongue" experience - I was still thinking "hey, this is new" - ie I was still observing it happening.
I totally agree that this must be a brain state; after all, we are meat. It was fun, I spent a few weeks just totally engaged in the moment, but over time it faded away. It's really not something I feel I want to chase, or get again. I view it as a different brain state, not a 'better' one, or closer to "truth" or reality, or anything like that. I can see how this sort of thing could be very useful for someone who spends their lives mulling about what could have been, "I can't believe so-and-so said that", all that negative energy. On the other hand, I get a heck of a lot of milage BY mulling over things. For me, it's part of the creative and intellectual process.
I'm not poo-pooing it, as I draw on it all the time. Heck, this morning I started to get irritated because the person in front of me was driving too slow to catch the next light in time, and then I laughed at myself, realized what I was doing, and just sat back and enjoyed my drive.
Zen? Not zen? I don't know, I don't care. What I experienced felt exactly like what all the descriptions of those brain states sound like, and it wasn't too much like I had imagined it was like beforehand. Like Kevin, I think the same brain state is experienced in many cultures. I suspect those that have near death experiences may be shocked into it.
Interestingly, my girlfriend is a neuroscientist, and her institute is involved in this research. They will be studying this phenomen using MRI and other techniques, and will be testing, among others, the Dalai Lama. Stay tuned...