While in Bristol, I mentioned to my sister, Elaine, my recollection that IBM had simulated a mouse brain on their 'BlueGene' supercomputer. As we continued talking, this seemed to me an increasingly unlikely accomplishment so I just had to check.
What IBM actually achieved seems a whole lot more modest - see the web page of one of the researchers, Dharmendra S. Modha, here.
And the state-of-the-art here (they have since moved to rats).
Someday they will get the architecture as well as the connections right, and link the whole thing via WiFi to a real rat body, with eyes and legs. Scary.
Modha says that the human brain is four hundred times bigger ...