How far can technology go to recreate a mammalian brain? Well if its AI you are talking about, its not even .0001% of what the real brain is capable of achieving.

I had a look at an interesting project, the Blue Brain Project, whose aim is to reverse engineer the mamallian brain to obtain the mechanism of its working through detailed simulations. To simulate these the project uses IBM Blue gene supercomputer! Biologically speaking our brain is made of many neurons that transmit the information in electronical pulses.

The interesting thing here is that they have been able to recreate a virtual pack of neurons that respond simliar to our brain! Rather than trying to create a model of the whole brain at once, the Blue Brain Project is attempting to accurately model a single NCC in a rat’s brain. If they can create an artificial column that responds the same way that biological ones do to electrical impulses, they’ll be on the right track to building a good model.
I am sure that much more will be achieved in future where we will actually see AI androids that we saw in iRobot