I thought "EXG" was generally used to indicate "EEG, EMG, ECG or EOG" ... but in the context where they've listed the others, I don't know what the separate "EXG" channels are supposed to measure. Is this like, "we have two spare dangling electrodes and you're free to stick them wherever -- you decide"?
Has any company done anything interesting with dry electrode EEGs? Most of the ones I've found use hacks like sensing head orientation or muscle twitches rather than brain signals. Dry electrodes seem to be useful for sensing "calm"/"focus" states but can't get any real data out of them.
The most interesting one I've seen is NextMind which uses flickering visual stimuli that is picked up by the brain sensor, but this is a more cumbersome version of eye tracking.
https://www.youtube.com/@perrikaryal/videos has some interesting EEGs based game control demos but it's clickbait since most of the inputs come from head tracking with a single bit (i.e, button down/up) of input from the EEG. And that can be done much better with a blink detector.
I did a project in 2015 using a Muse EEG headset to detect varying levels of brain activity to generate insect, frog and snake sounds. From the data I saw, it was more than just calm/focus.
I don't get how companies in VR still don't understand that bulky VR sets are just not going to be popular.
I just want a pair of glasses with ascii text output, a camera, microphone, and a link to my smartphone to do all the heavy compute (or offload it to the cloud)
No, they are doing a more complex AR style with graphics that is going to be flashy. Not needed. Too much power to drive the displays, adds to device weight and bulkiness, e.t.c.
Simple transparent oled display output is all that is needed.
I thought "EXG" was generally used to indicate "EEG, EMG, ECG or EOG" ... but in the context where they've listed the others, I don't know what the separate "EXG" channels are supposed to measure. Is this like, "we have two spare dangling electrodes and you're free to stick them wherever -- you decide"?