It is clear that when the nerve cells of the brain are irradiated with radio waves in the terahertz band, which is a candidate for 6G, the cells have grown abnormally
In recent years, the bandwidth near the frequency of 1 terahertz has been viewed as a promising candidate for allocation to the next-generation communication standard '6G.' Although it is the frequency of the terahertz band that is expected to realize high-speed communication, in an experiment in which mouse nerve cells (neurons) were irradiated with radio waves of such frequencies, the neurons showed an abnormal speed of about 150% of normal. It was revealed that he grew up in
Eyes on 6G safety as Chinese scientists find terahertz radiation boosts brain cell growth in mice | South China Morning Post
Li Xiaoli et al. of Beijing Normal University irradiated mouse neurons placed in a Petri dish with radio waves of a wide frequency range from 0.3 terahertz to 3 terahertz for 3 minutes, and the neurons grew about 150% faster than usual. From a molecular biology point of view, it was suggested that the irradiated neurons remained healthy, despite growing at an ultra-fast rate compared to the control group.
In addition, the axons connecting neurons also grew to twice the length in 3 days. However, such growth does not last forever, and it is said that the growth rate tended to slow down significantly two days after the first irradiation.
``This discovery will help assess the safety of new communication technologies and may lead to the development of treatments for brain diseases,'' Li et al.
According to Li et al., the proteins that lead to the growth of nerve cells have many hydrogen bonds and are constantly vibrating. It is said that this vibrational frequency happens to coincide with the terahertz band and can enhance the production and activity of specific proteins. This may affect the shape of the protein, which in turn may affect the structure and function of neurons.
However, it is said that the internal structure of proteins can vary greatly depending on the individual, and only specific proteins react to relatively weak terahertz waves. ``Further investigation is needed to understand the changes in proteins caused by different exposure intensities,'' said Li et al.
Another study from Xi'an Jiaotong University reported that exposure to 90mW terahertz waves for 20 minutes a day for three weeks significantly increased the number of new brain cells in young mice. On the other hand, it seems that there was no change in the old mouse, and the reason is not clear. A research team at Xi'an Jiaotong University said, ``The change in cells may help mice find a way out more quickly when life is in danger.''
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