Cell: behind the scenes? The brain can go beyond the body to locate the touch boundary
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Last Update: 2019-12-31
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Source: Internet
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Author: User
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The progress of human civilization is the invention of a variety of tools When you work hard, you can feel the joy of writing on paper Even pens and ball pens of different brands have different writing feelings You are actually "touching" the paper with the tip of the pen, but the sensory system of our hand is only at the edge of the skin of the hand, and there is no sensor in the tools we hold That's why How can a detailed experience like touch be generated? According to the latest research, when we touch the object we hold, we can determine the exact position of contact on the object in addition to the changes when we feel the pressure transferred to the finger Even if we do not directly touch the body, our brain can also detect the position of touch The tool we hold is almost like an extension of ourselves The results of the study are published in current biology https://doi.org/10.1016/j.cub.2019.10.062 In more than 400 tests, more than one study participant held the wooden pole, felt and determined the position of the two strokes on the pole In addition, the researchers used electroencephalogram (EEG) devices to record participants' brain activity The results showed that 96% of participants recognized two touch correctly, and the brain uses similar neural mechanisms to detect the feelings on our own skin and the objects we hold Hypothetical neural mechanism for sensing the touch position on the skin and tools
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