I read about this on Head-Fi a couple of days ago.
Basically, if you listen to the same thing through headphones but with one channel offset by a set amount of hertz mimicking brain patterns during certain activities, weird things happen.
Quote about Theta waves:
QUOTE
The 5-9ish hertz range is called theta. I find that it makes me a little more creative and mentally flexible and helps my concentration too. I used to listen to white noise waved for theta in college when I had something that HAD to be done and required a few straight hours of attention. I was always amazed that it helped me sit there straight through to the end, whereas I'd normally be up screwing around, getting snacks, going to the bathroom, etc. If I use a theta synchronization for a while (say, a half hour or more) while lying down, eyes closed, my mind usually wanders quite a bit, sometimes to strange topics, I experience time distortion where the half hour of listening feels like hours, and I often feel a strange combination of sleepy and energized when I'm done.
Quote about Delta waves:
QUOTE
Delta also exists, basically <5Hz. Delta is essentially the state of deep dreaming. I have a hard time synchronizing to delta sometimes but when I do, it's a total checkout from reality. I "forget" that I'm listening to something, or in a house, or have a body, and my mind just flies around freely to whatever it wants. Also dreamlike, I can't usually remember much of my thought process after my delta recording ends. Kinda fun to play with, though theta is generally more useful because you can still direct your thought process, if you choose. Can't say I've ever had an OBE as a result (as I typically think of OBEs), though you could consider losing sense of your body to be an OBE of sorts.
Naturally I was skeptical, but after doing some research and finding that for the most part science agreed with him, I crossfaded Theta noise onto a cd and put it on while lying in bed.
I was lying there for about five minutes wondering what was going on, and then it happened.
Everything turned black and white in my eyes, and my alarm clock rang.
It was two in the morning, one hour after I had put the cd on endless repeat.
Not thinking about why it rang, I disabled the alarm and continued my journey. It was like dreaming, but without dreaming...
I kept turning the volume on my cd player lower and lower, and somehow the noise became louder and louder.
I felt like I was on drugs, as the bed began to move and my room swirled around.
The alarm clock rang again.
It was five.
I hit the snooze button and began to dream almost in stantly.
I was in a shopping mall, with no one around and no exits. I wandered around for what seemed like days.
I felt like I was going to die from hunger.
The alarm clock rang again.
It was five fifteen.
In a daze, I hit the snooze button again.
This time I was riding a roller coaster, but it didn't seem like it had an end. Just when the ride stopped, a trap door would open and the coaster would continue along another path.
The alarm clock rang again.
It was five twenty.
I turned off the alarm and got up. I took a shower and ate some leftover pizza.
Someone knocked on the front door. I opened it, and it was my friend, picking me up to go to school. I checked the time and it was six, two hours before school was supposed to start.
The alarm clock rang again.
It was six forty.
I actually got up and shut off the cd player. Despite only getting five hours of sleep, I was amazingly relaxed, and although I had put in an enormous workout the past night and was very sore going to bed, I was perfectly normal getting up.
This is all a true story, and you bet I'm going to use these from now on.
Here are the links to the sounds.
If you plan on using them I recommend you crossfade, because they do not go together seamlessly.
NEWLY MIRRORED: http://www.ghettodexter.com/files/headhacking
(thanks to Mormegil)
Good luck.
