Scientists all set to build the first virtual human brain, which aims to map all the neurons and their interconnections in a supercomputer.

The project is aimed at mapping all 100 billion neurons connected by 100,000 billion synapses of the human brain on a single computer system. According to Markram, this simulation would help to understand mental illness like Alzheimers, autism and dementia much better and develop more efficient treatment options.
In 2006, Markram has simulated nearly 10,000 virtual neurons. In 2011, Markram and his team simulated a virtual slice of brain containing 1 million neurons.
Source-Medindia