There are more and more work in the use of mental power in modern society. Many people always hope to have a way to boost their brain power, to be more competitive, whether it is to eat "smart drugs" or tonic, or even use electricity to stimulate the brain. According to the argument, using a weak current through the skull can stimulate the brain, improve brain power, and receive the effect of the brain's "overclocking". In the end, this practice is useless, and the research team at the University of Oslo decided to find out.
In the past, there were many hypotheses that transcranial direct current stimulation (tDCS), that is, placing electrodes on the head, passing a weak current, allowing current to pass through the skull and stimulating the brain. This may improve brain performance. The brain is "overclocked", which makes people's brainpower improve, more focused and efficient. Is this saying science or the legend of the rivers and lakes? Three graduate students from the Institute of Psychology at the University of Oslo discussed the results and published them in the journal Neuropsychologia.
They recruited volunteers and asked them to do some mental work. The work was divided into three levels: simple, medium, and difficult. When the average person had simple and medium difficulty tasks, they did not need to concentrate on exhausting all brain power, but the difficulty level. The challenge is to go all out.
The research team was relatively normal, but the deceived subjects had a control group that received current stimulation, and the experimental group that allowed the subjects to perform the task of receiving direct current stimulation of the cranial nerves to see what kind of difference occurred. The results were simple and medium. In the difficult task, whether or not the current stimulus is used does not affect the work efficiency. However, in the difficult task, contrary to the hypothesis, receiving the current stimulus is not inefficient, but has a significant negative effect.
The research team found that when performing current stimulation, the subject was severely disturbed and difficult to concentrate. As a result, the subject's difficult mental work requiring concentration was greatly reduced. In contrast, the self-righteousness was stimulated and virtually no current was passed. The control group did not have any problems with difficult mental work. That is to say, the direct current stimulation of the cranium not only does not cause the brain to improve, but when it is difficult to work, it makes the brain down, unable to concentrate, and work more inefficient.
Many people claim that direct current stimulation through the skull can improve memory, enhance self-control, increase creativity, direct current stimulation through the skull, and even treatment for depression, rehabilitation stroke, brain tumor, dementia patients, etc., the United States The Air Force is also interested in transcranial direct current stimulation, claiming that cranial direct current stimulation reduces the pilot's training time by half, and the Army also tests whether cranial direct current stimulation can improve training speed, and various cranial direct current stimulations are available on the market. Flooding, there are game players wearing smashing, and some students buy to think about improving their brain power.
Although there is no obvious side effect of the current direct current stimulation of the skull, perhaps the user should think twice before avoiding overclocking the brain and the result is down.
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