IBM's supercomputer Blue Gene/L has been used to run a 'cortical simulator' as complex as half of a mouse brain. The researchers say that their work has shown characteristics of thought patterns observed in real mouse brains, and are now working on improving the simulation to allow it to run faster in order to make it more neurobiologically faithful. Blue Gene/L is one of four Blue Gene projects in development and is the fastest computer in the world with a theoretical peak of 360 TFLOPS. Using 4,096 processors, each with 256MB of memory, the team managed to create a virtual mouse brain that had 8,000 neurons with up to 6,300 synapses each. Real mouse brains will have about 16,000 neurons which can have up to 8,000 synapses (connections with other nerve fibres) each.