[pedalpete]

We're building an eeg device for sleep, and work with a colleague who is on the Emotiv team, so I've got a bit of experience.

The state of BCI is improving, but one of the challenges is for many of the things we'd want to do, you need electrodes placed in areas that have hair. There are flexible sensors that can find their way through hair, but as somebody with thick curly hair, they are not fit for everyone yet. Then there is movement that also needs to be considered for many of these devices.

This is why something like Muse headband used for meditation is a good starting point. You are placing the electrodes on areas that don't have hair, and the use case is while being still, so you have consistent contact without movement.

At my start-up (https://soundmind.co) we're using forehead mounted electrodes which measure your brain waves during sleep, and we use sound to improve sleep performance. So like Muse (which you can also use during sleep, but does not yet provide stim), we benefit from measuring very small signals when you are mostly still.

I think if we were walking down the street with our headband trying to control cat ears, you'd get lots of EEG artifacts due to movement of the electrodes.

My 2 cents.