What are some leading companies working on Brain-Computer Interfaces (BCI), and what is the current state of development for BCI devices? - Quora

Answer (1 of 6): The state of development for BCI devices is really pretty primitive. You have a few companies commercializing EEG headsets (Emotiv and OCZ NIA are the two most well known), but as far as actually controlling anything EEG is pretty poor. Also, just for reference, by convention "...