The NeuroCoin idea is this: we would harness the neuronal structure of the brain for hashing power. Basically, a person would have a surgical procedure so that he could connect to a software miner; the miner would send problems to the brain to solve while at the same time projecting a virtual reality directly into their consciousness. The brain is the most advanced supercomputer in the Universe. People would got o massive NRC farms and connect themselves for X time, or stay connected forever and enjoy their parallel realities.
Not a good idea, this is what happened in the matrix.
But seriously the way these cryptocurrencies work has a few similarities to the way the brain works, just not as dodgy. I don't think having money on the brain the whole time is the best of ideas though.