Leslie Valiant has done some interesting work on quantifying the efficiency of the brain from the viewpoint of computer science, see e.g. https://www.youtube.co

Leslie Valiant has done some interesting work on quantifying the efficiency of the brain from the viewpoint of computer science, see e.g. https://www.youtube.com/watch?v=X9hRRh76QEA https://www.youtube.com/watch?v=X9hRRh76QEA and the book Circuits of the Mind.