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Brain wave meter

A research group at Keio University, led by Associate Professor Yasue Mitsukura, has developed a simple brain-wave meter. This can identify, in real time, “The main feature of this device is that it measures and displays brain waves in real time. So it can measure how sleepy or aversive you are right now, and how much you’re concentrating.”
“Previously, it was said that if you produced a lot of theta waves, you were sleepy, and if you produced a lot of alpha waves, you were relaxed. But with our method, the key point is which frequencies are most intense. For example, 11 Hz and 17 Hz are important frequencies for sleepiness.”

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