Use functional MRI technology to understand brain activity

There are many people around us who cannot express their thoughts in words and deeds due to various disabilities, which makes communication with them a big problem. The scientific community has been devoted to studying whether the brain can be read by scanning the brain. Today, this research has made breakthrough progress.

Functional magnetic resonance imaging (fMRI) technology to understand brain activity

Recently, researchers at Princeton University have resolved to use functional magnetic resonance imaging (fMRI) technology to understand brain activity. Functional magnetic resonance imaging technology can display small changes in magnetic resonance signals caused by blood oxygenation in venous capillaries in various regions of the brain. Using fMRI methods, functional positioning of brain activity can be achieved in normal living bodies without damage The spatial and temporal resolution can reach the order of seconds and millimeters. Although it is not possible to describe exactly what it is, it can distinguish the type of things you want, such as animals instead of vegetables.

For example, if you imagine a carrot and then a cow, these two thoughts will activate different areas of the brain, which can be easily identified using fMRI. Now researchers have refined this scan to be able to distinguish the types of things corresponding to different areas. When people think, they will record various "shortcuts" in their brains. When they think of various specific items, there will be special corresponding areas. Perhaps these areas are not refined to represent carrots or cabbages, but are abstractly classified as "vegetables." And then point to "animals" when thinking of little white rabbits or cows. In this case, fMRI can recognize the corresponding mark.

The researchers said: "The next research work is to fine-tune the scanning accuracy to achieve the purpose of identifying more specific things. Imagine that if you scan the brain to know what it is thinking, what is it? At that time, people can Communicate directly with other people's brains, even if the other person is completely incapable of acting and cannot express it in words. "

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