Release date: 2012-12-06



A team of scientists in Canada said they have developed a functional brain model that is by far the closest to the real brain. This digital brain, which is run by a supercomputer, can be used for visual input, and its robotic arm can draw its response to visual input. This simulation brain is very advanced, and it can even pass the basic test of IQ test, which is the world's most complex and largest human brain model simulation.
The brain, called Spaun, consists of 2.5 million simulated neurons that perform eight different types of tasks. The scope of these tasks ranges from tracing to calculations to question answering and fluid reasoning. During the test, the scientist showed a series of numbers and letters, and Spaun was put into the memory, and then the scientist showed another letter or symbol as an instruction to tell Spaun what to do with its memory. The robotic arm then depicts the mission output. The research was published in the journal Science.
The basic concept of this simulated brain is to try to make these subsystems behave like real brains: the visual input is processed through the thalamus, and the final data is stored in the neurons, and the basal ganglia sends task instructions to a portion of the cortex. All of these calculations are performed by precise physiological simulations that mimic voltage spikes and neurotransmitters. Spaun even mimics the limitations of the human brain, trying to store more short-term memory than a small amount of memory. Mechanically speaking, this simulated brain is very simple, but its ability to work is amazing.
Researchers say there are some very tempting hints about the development of this brain: starting with simple tasks, then accumulating them and combining them to make models with complex functionality. The research team, led by Chris Elia Smith, said that their next step is to make Spaun adaptive plasticity – the ability to re-lay new lines and learn new tasks with simple actions, not just pre-arranged. The program does.
As the ultimate goal, Elia Smith is very optimistic about the development prospects of Spaun. He said: "It helps us understand brain behavior, biobased and related behaviors. This is very important for all types of health applications." He "kills" artificial neurons in the test and observes the decline in Spaun's ability to perform. This is essential for understanding natural aging and degenerative diseases.

Source: Shanghai Medical Device Industry Association

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