Here are links to some very informative websites if you want to learn more about BCI (Brain-Computer Interface) Technological Developments

http://www.thinkartificial.org/ This is a blog site with tons of links to other sites and categories such as A.I and Machine Interfaces.

http://www.neurosky.com/
A company that produces incredible BCI technologies such as in the video below where a person controls a video game only by using his mind: Check out a video about them on YouTube as well:

http://www.ologicinc.com/
"OLogic is an embedded systems research and development company with a focus on robotic applications, and bringing robotic technologies to life in non-robotic product domains."

http://regen.eyetap.org/
This is eyeTap Labs, exploring "Existencial Technology", "Wearable Computing", and "Mediated Reality" to name a few endeavors. Must See! They produced the techology used below for the 2003 DECONism Gallery.

Electroencephalography: Want to know just HOW BCI technology is possible? It's called Electroencephalography, and it is a blossoming field that allows such inventions to flourish! Check out our beloved Wikipedia for more info and plenty of links.