Abstract
Photic Feedback (PFB) technique for mental relaxation was previously developed, but its effect differs because the system emits light to the subject's closed eyes. I devised PFB-Frontal Alpha Wave Pulsed Photic Synchronization (PFB-FAPPS) method that avoids physical stress to the eyes from the PFB-emitting light. PFB-FAPPS system detects brain waves through electrode (Fp2), and registers the alpha waves by a band-pass filter (center frequency; 10.0Hz). It simultaneously modulates the augmentation of a red light-emitting diode, corresponding to the amplitude of the registered alpha waves. Users' eyes are shielded from the light, and a red photodiode light is used for exposure to the user's forehead. Using PFB-FAPPS system, alpha wave amplitudes increase and norepinephrine decreases prior to the 1st and the 21st sessions. This safe technique for gradually reducing norepinephrine is useful for decreasing the feeling of irritation commonly experienced by patients.
