3 ms·
As far as I know, surface EEG is almost useful in terms of controlling anything. It can even be quite hard not to make the software cheat and work with the much
by bayesian_horse 3y ago
As far as I know, surface EEG is almost useful in terms of controlling anything. It can even be quite hard not to make the software cheat and work with the much stronger and easier to control signals from muscles.
Stuff like that is useful for neurofeedback, however. I haven't tried the newer models of the Mindwave headset, but the older ones were easy to interface with over bluetooth. That's a place I might start rather than building a custom electronics board.
- mkaic 3y agoFascinating, I wasn't aware EEG was so susceptible to signals from outside the brain. I knew it didn't have the highest SNR, but I guess it does make a lot of sense that a big reason for that would be it contamination from electrical impulses from the rest of the body.
- i2pi 3y agoMuscle movements, think talking, chewing, or blinking, generate voltages orders of magnitude higher on the scalp than sources from neural activity inside the skull.
- bayesian_horse 3y agoI would even say EMG is more useful as a HCI channel, except in the most extreme situations like lock-in syndrome or late-stage muscular dystrophy. EMG is way more easy to control consciously and as Humans we probably have hundreds of degrees of freedom in our body for some kind of EMG, not all of it conveniently accessible of course. Controlling what consumer grade EEG devices can pick up is a lot harder. Brainwaves are "feedbackable", but that usually means changes in mental state like awareness, concentration, relaxation and so on.
- bayesian_horse 3y agoI wanted to say "almost not useful" but apparently am not meditating enough recently ;-)