See here for all the tradeoffs involved in current brain imaging technology: https://waitbutwhy.com/2017/04/neuralink.html https://waitbutwhy.com/2017/04/neural

See here for all the tradeoffs involved in current brain imaging technology: https://waitbutwhy.com/2017/04/neuralink.html https://waitbutwhy.com/2017/04/neuralink.html Long story short, if you want a real time interface that also has high spatial resolution, you need to get invasive (and increase the number of electrodes by a lot)