That sort of confirms my suspicion - that it's a very active topic. And it's not necessarily easy to break into. I was hoping there was a good pop-sci summary book that laid things out real nicely. Like what The Selfish Gene does for evolution. But I read the book Blindsight, and am now reading Metzinger's The Ego Tunnel, just because it seemed incredibly interesting. So who knows how deep this will go for me :)