| 摘要 |
PURPOSE:To remove a bad effect caused by the putting of a band around a head by including an element to catch a magnetic change as a brain wave detecting means. CONSTITUTION:A weak signal detected by a brain wave detecting means 1 including the element to catch the magnetic change is amplified in an amplifier 2, a noise is removed from the electric signal in a filter 3, and only three necessary frequency components are selected in a frequency selector 4. Next, necessary data processing is executed in a control part 5 based on intensity data in three or more frequency components, and signals are supplied to various output devices 6-9 under necessary forms. According to the above-mentioned composition, since the element to catch the magnetic change is included as the brain wave detecting means, the magnetic change caused by the generation of a brain wave can be caught without contacting with a human organism, and the bad effect caused by the putting of the band around the head can be removed. |
