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According to a recent study released by the University of Manchester in the United Kingdom, the use of technical means to "tune" the brain to a certain brainwave frequency during the trial can successfully reduce the pain of volunteers and this discovery may help to develop a remedy for chronic pain New therapy. Chronic pain plagued many people, especially in the elderly, but the current safe and effective treatment to alleviate these symptoms is limited. To this end, the University of Manchester researchers try to relieve pain by adjusting the brain waves to achieve the purpose. Alpha brain waves are one of the four basic brain waves at frequencies between 7.5 and 12.5 Hz. Researchers have previously found that alpha brain waves from the forebrain are associated with placebo analgesia and may affect the process of pain management in other areas of the brain. The researchers speculated that if the brain can be "FM", so that it produces more alpha brain waves, it may reduce the pain of people. The report, published in the European Journal of Pain Medicine on the 3rd of this month, describes the researchers' use of laser to repeat and briefly irradiate the volunteer's arm during a trial to create a feeling of pain and then use two methods to achieve "FM" in the brain: Let volunteers bring in special flash glasses with a flash frequency similar to that of alpha brain waves, and let the volunteers receive sound stimulation in both ears at a frequency that is also within the frequency range of alpha brain waves. The results show that both visual and auditory stimuli, can effectively alleviate the pain caused by laser irradiation. According to Anthony Jones, a University of Manchester professor and one of the authors of the report, in the future, it is possible to develop simple and safe new therapies to help patients with pain relief. However, researchers said more clinical trials are still needed to analyze how this method works in patients with different types of pain.