I am aware of what feedback loops and many methods of brainwave controlling one's own brainwaves are including those that do not require feedback loops. I don't believe that you quite caught what I was saying. Yes, I know that a person can train themselves to display certain kinds of brainwaves.echoone wrote:Generally they don't detect "precisely what you're thinking." The technology is based on pattern recognition and training (discovery of that pattern). So when a pattern of x, y, z, ... from sensors a, b, c, ... are detected, it can infer a specific cognitive function is taking place because of the action specific training involved. In this case, that generalized cognitive function is, "think rotate a direction" or an abstract of, "disappear".
With a little practice and the right equipment, you can actually learn to focus and control some of your brain waves. IIRC, theta waves are one such example. This is typically done via a feedback loop between you, a device which displays a value, and a sensor connected to your head.
I personally believe what they demoed is real. Stuff like this have been in R&D labs for a very long time. The major hurdle has always been available computing power for training and recognition, and consumer price point for the sensor array. The computing power is very likely available now in consumer homes. IMOHO, really the only claim they need to prove is that they can produce a reliable sensor array, which does not require contact gel+direct skin expoure, at a reasonable, consumer price point. They claim they have. We'll see.
What I was getting at was a concept called umwelt. This is a german word that I read in a science book one time and have trouble remembering because I don't speak german and there's no English equivalent for the word. The definition is "organized experience that is not shared by all creatures". All creatures and people have their own umwelt. For example, a rattlesnake has 150,000 sensors on something called it's pit organ located above it's mouth that allows it to hunt without the use of other senses by detecting temperature changes in the environment. As a result, it's umwelt is much different than that of a human.
People have their own individual umwelts (even if they're all human umwelts) too and that is a good thing. Therefore, if a machine such as this requires so much training to use, even if it picks up on brainwave patterns from which generalizations can be made (and keep in mind these are only generalizations and may still leave out a very large percentage of the population including people who can use it), it will not be suitable for many people to use. Sure, some people can rotate a robotic arm when they're hooked up to a computer, but I agree with this guy, we're no where near being able to be jacked into a network like that to play games:
http://www.youtube.com/watch?v=nZRXrOq1T08
This is a realistic video. If you're interested in this subject, you may want to watch it. I think it's interesting.
As this guys says, with a scalp EEG, you have good timing when signals are coming off the brain, but you don't know where signals are coming from. It's like trying to figure out how a car works by measuring the vibrations from the hood. Imagine if you had a blind, someone with damage to the occipital lobe of the brain causing them to be blind even though they have no eye injury, or visually impaired person who has different areas of the brain activated when they think of rotating something than a person with vision does.
I didn't write "And twitching muscles is another one." or say anything about this in my previous post. FireStorm_ posted that. It was a misquote, but, lol, don't worry, you didn't loose your entire post like I've done before. That is annoying.echoone wrote:Some prosthetics work off of this muscular/nerve/voltage detection. That's what I was referring to as, "muscular", in my previous post.Panda wrote:And twitching of muscles is another one.