Geek News Central
It’s no longer sci-fi, you can now interact with technology using the power of your mind (rather than your thoughts being controlled by computers.
The system consists of a lightweight headset with two electrodes that detects brainwaves such as alpha and beta waves. Different patterns are associated with different mental states, e.g. concentrating with beta waves and relaxed with alpha, so as your mind changes states an action can be taken. Trivially, you can link your concentration to a light, so while you are concentrating on reading, the light is on and bright, but as you relax and drift off to sleep, the light dims before finally turning off.
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