I have 0 brain HCI experience but can’t you take that 2 or 3 bits of information and then use time multiplexing to encode more signals? Eg if I can reliably swi

I have 0 brain HCI experience but can’t you take that 2 or 3 bits of information and then use time multiplexing to encode more signals? Eg if I can reliably switch between relaxed and angry at a rate of 100ms I get 2x the bandwidth every 200ms