The neural system in the mouse brain is similar to the Internet Structure

 

A new US study found that neural systems in a small area of the mouse's brain are similar to Internet structures. This poses a challenge to the traditional theory that the brain neural system is a hierarchical structure. New discoveriesAt the University of Southern California, the neurosystem scientists Larry swangsen and Richard Thompson isolated the pleasure and reward-related volt areas in the mouse's brain and injected two "tracers" at the same time ", it is used to display the Signal Direction and source respectively. The "tracer" follows the signal but does not interfere with the signal movement. It can emit light and can be observed under a microscope. They found that signals are moving in a network composed of circles. This network "is not a hierarchical architecture with upper and lower levels ". Thompson spent more than eight years developing and improving the tracing method used in this study. Most other tracing methods can only track one signal in one direction at a single position. "We can observe four connections in a brain loop on the same animal at the same time," says swensen. Academia assumes that the neural system in the brain is similar to the Internet structure, but no experiments have demonstrated this assumption. The research report is published by the National Emy of Sciences ( PNAs.

Old TheoryResearchers previously thought that the neural system in the brain is like a large enterprise that can draw a straight line chart from the Central Department to the following small departments. In August 11, the BBC quoted tradeson as saying: "'The top-bottom theoretic 'occupies an astonishing dominance in the literature of experimental neuroscience, this theory can be traced back to the 19th century." The existence of Internet-based structures in the brain can explain that the brain can overcome local damage. "You can remove any part of the Internet, but the rest of the network will work as usual ", similarly, the nervous system cannot say that a part is absolutely indispensable. Next stepSwensen said that at least the mouse's brain nucleus found a different neural system structure. In the future, we can use the tracing method used in this study to observe other parts, and finally draw a neural network diagram of the entire brain. "Drawing the entire neural network map of the brain is a very complex task," swensson said. "Currently, it cannot be certain what impact this map will have on solving the problems of consciousness and cognition. "But it's like a human
Genome Project. It is believed that finding the complete DNA sequence of humans is a cornerstone of research biology, and it will take no matter how long it takes to complete the work, "swunson said.