[y-curious]

I've spoken to a lot of smart people on the topic of EEG (I'm in a very related field). I agree with you.

It's an extremely powerful tool for diagnosis of a limited range of conditions but it is not magic. Electrical signal gets attenuated heavily when signals are not on the outside of the brain. Even still, a headband like this is susceptible to noise from movement and other factors. You either need to correct for this with AI, which introduces a second source for error, or you need a very still user. I'm not convinced by the ability to "read minds" with the technology; I would need the man in the video answer some specific questions to be convinced.

Is this better than not being able to communicate at all? Yes.

[Sanzig]

What they need to provide is surveys from the patients without the device (even locked in patients can often communicate slowly via eye-scan interfaces). How well do the patients rate the system at aligning with what they want to say?

If they don't find that it aligns at all, then honestly that is worse than nothing. Imagine being locked in and your family communicating with an LLM pretending to be you - all while you have to watch and can't do anything about it.

[anonzzzies]

It might be beneficial to the family though, but indeed not to you.

[Grimblewald]

I'd argue the family doesn't have the right to feel better at your expense, over something that was no one's fault.