Slight noise during sleep is good for memory improvement

As the saying goes, "Do not eat, sleep without words", should go to sleep in a quiet environment, is the common sense recognized by most people, and in this era of fast pace of life, it is the pursuit of most people, even hope .


However, a recent study found that slight noise, such as running water, synchronized with brain wave rhythm during sleep can significantly improve the quality of deep sleep in older elders and enhance their memory. I believe this discovery is expected to be developed as a home sleep aid.


Slight noise during sleep is good for memory improvement


The brain still functions as a memory for sleep.

Sleep is a very important process of implanting short-term memory into long-term memory. After entering sleep, the body seems to be still, the brain is still working, the nerve cells are still active, and the energy consumed is also equivalent to waking, because the nerves of the brain The cells are busy storing what they see during the day as long-term memories.


Sleep plays an important role in memory solidification (or memory consolidation), but people will gradually shorten their deep sleep after middle age. Scientists believe that this is inextricably linked to the decline of memory. Scientists at Northwestern University have found that their designed sound stimuli can effectively improve the quality of deep sleep in older subjects and improve their performance during memory tests.


The memory of the stimuli is greatly improved

In this study, there were 13 subjects over the age of 60. During the nighttime sleep, if they received the sound stimulation designed by the researchers, the performance of the memory test will be greatly improved, and the effect is 3 times that of the unstimulated control group. ! Dr. Zee said, “Although our trials only stimulated the subject with sound for one night and have not been tested for a longer period of time, it seems to be a method that can be used at home.”


Brain waves are the sum of electrochemical changes in brain nerve cells, so measuring brain waves can be used as a tool to evaluate and examine brain function. The difference in brainwave frequency between awake and deep sleep is quite large. From waking to sleep, the brain waves will gradually change. The brain wave amplitude is low and the frequency is high when awake, and then the brain wave amplitude is slightly larger when the body relaxes but is still awake before going to sleep. The brain wave amplitude during the sleeping period becomes higher and the low frequency is lowered (0.5~3 Hz), so it is also called "slow-wave sleep" or "deep sleep". It is generally believed that the deep (slow wave) sleep phase is the most critical sleep period for memory curing.


Therefore, the sound stimulation tested by the research team is designed for the deep sleep stage. Because each subject has a different time to enter deep sleep, they monitor their brain waves with the instrument while sleeping, and design a computer program that is accurate when the subject enters deep sleep (the brain waves are slow) When the type is), the sound is stimulated. They found that giving a sound stimulus at this time would increase the amplitude of the slow wave, which showed that the activity of the brain's nerve cells was more consistent.


Previous studies have demonstrated that sound stimulation during deep sleep can improve young people's memory, and this study demonstrates for the first time that this method can also be applied to older people. Scientists at Northwestern University are also trying to use new technologies to improve the memory loss of patients, hoping to help patients with mild cognitive impairment.


Conclusion:

Science and technology is constantly developing and progressing. It is the crystallization of the wisdom of human beings. After all, it will also feedback and return to human beings, making our lives more happy and happy. At present, in the ever-changing home environment, smart home is an industry development opportunity that cannot be ignored and missed. I hope that after this research is truly and widely confirmed, it can become a breakthrough for smart homes, so that the masses of the people can sleep with confidence. Life is at ease .


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