| 摘要 |
PROBLEM TO BE SOLVED: To efficiently induce a target brain wave of a subject in a brain wave induction apparatus. SOLUTION: In this apparatus, brain wave signals are picked up from the head H of a subject with electrodes 1a, 1b, amplified in a biological amplifier 5, and outputted to a band filter 6. The band filter 6 is to allow passage of only specific frequency components corresponding to brain waves targeted for induction among the brain wave signals. Passing band properties of the band filter 6 are set in the range of 8 to 13 Hz in case the brain wave to be induced is an α wave, 4 to 7 Hz in case of a θ wave, and 14 to 30 Hz in case of a β wave by a control part 3. The brain wave signals in the band filter 6 are adjusted at a predetermined level by a level automatic adjustment circuit 7 and inputted to an RGB converter circuit 8. A color light is selected by a selection switch 4. A light signal of a selected color light is synchronized with the brain wave signals, flickered and given to the subject by a light stimulation device 2 and the RGB converter circuit 8 and a voltage/current converter circuit 9a, 9b or 9c. Or the control part 3 is to select the color light on the basis of an output of the band filter 6. |
