This is your brain. This is your brain on Twitter.

It might be an overstatement to say that Twitter would blow your mind, but I think it might be fair to say that the work of University of Wisconsin-Madison doctoral candidate Adam Wilson will.  Adam and a network of others have been working on a brain-computer interface that will allow people to, among other things, tweet hands-free using nothing but brain waves to type and transmit 140-character messages.

Here's how it all works:

The interface consists, essentially, of a keyboard displayed on a computer screen. "The way this works is that all the letters come up, and each one of them flashes individually," says UW Assistant Professor Justin Williams. "And what your brain does is, if you're looking at the 'R' on the screen and all the other letters are flashing, nothing happens. But when the 'R' flashes, your brain says, 'Hey, wait a minute. Something's different about what I was just paying attention to.' And you see a momentary change in brain activity."

Wilson, who used the interface to post the Twitter update, likens it to texting on a cell phone. "You have to press a button four times to get the character you want," he says of texting. "So this is kind of a slow process at first."

However, as with texting, users improve as they practice using the interface. "I've seen people do up to eight characters per minute," says Adam Wilson.

Sounds impressive, but you've really gotta see it in action.  Watch:

[Feed and email readers, click through to the blog to watch.]

Total, geeked-out coolness but -- more importantly -- tremendously useful for individuals whose brains work well but whose bodies don't.  Nice counterpoint to last week's celebrity-twit chatter, dontcha think?

You can get all the details about the brain-tweet work coming out of UW here or you can follow Adam (and Adam's brain) on Twitter.  He's @uwbci and you can distinguish his brain-tweets from his regular tweets by the fact that the brain-computer interface transmits in ALL CAPS (ooh, just like Oprah.)