Chris Eliasmith, a neuroscientist at the University of Waterloo, spent many years thinking about how to build a brain. He will publish a guide book on how the gray matter structure of the brain interacts with brain elements. In order to convince people of his story, he must first make a demonstration. Eliasmit's team created the world's largest functional brain simulation Spaun. Spaun can count and memorize lists and even pass some basic IQ tests. Spaun stands for Semantic Pointer Architecture Unified Network, with 2.5 million simulated neurons, while human beings have 654.38+000 billion neurons. [1] Spaun "is the first model that can simulate the complex behavior of the brain by communicating with different regions, but it is far from being comparable to the upright brain in functionality.

Virtual brain is a digital model based on supercomputer, which can be observed by instruments similar to camera lens and can command mechanical arms to write and other actions. More importantly, the system also includes 2.5 million simulated "neurons", which can simulate brain waves by changing the voltage.

"Spaun" can perform many simple cognitive tasks and respond to questions raised by others and things observed through virtual "eyes". For example, after the researchers show the picture of the number "2" to "Spaun" in different ways, it can redraw the number according to different writing methods. It also has a good memory and can write a series of numbers it saw before in turn.