I find it frustrating and depressing: this stuff just never seems to get operationalized in a way that's accessible to folks outside university labs.
Where are the startups? Where are the hobbyist groups?
Where are the startups? Where are the hobbyist groups?
In Mesa, AZ: https://www.google.com/calendar/event?eid=bHB1ZXIyNXBpaHFpM2...
Our hackerspace, Heatsync Labs, does "Augmenting Humanity" on Monday nights. I believe one of the guys there is building a TMS device right now.
Also this guy: http://www.youtube.com/watch?v=HUW7dQ92yDU
And this video on how to use it: http://www.jove.com/video/2744/electrode-positioning-and-mon...
jim.jones1@gmail.com http://www.github.com/aantix
If you email me, I will let you know what its like.
This device will measure heart-beat variability too.
Maybe the tech has gotten better, but I wouldn't hold your breath for anything that costs $100.
No surprise there, the muscles of the head will have a stronger signal than the brain, if you're using electrodes outside the skull.
There might be some way of filtering those out, perhaps using additional electrodes directly on the relevant muscles. Subtract the signal on those electrodes from the signal on the other electrodes.
The ground, again from what I can tell from the photo, is on the earlobe. This is not a terrible place for a ground (there are no muscles there) but it's not ideal for removing EMG artifacts.
This type of device may need FDA approval which would require the setup of clinical trials, etc. So that would be a significant barrier to entry for startups.