US Patent 7582066 Neurological disease prevention apparatus through sound wave vibration

By the combined use of ultrasonic vibration generated by a pair of ultrasonic vibrators that are alternately driven asynchronously with the heartbeat, and stereo music vibration waves generated by a pair of music vibrators, the brain is gently and effectively provided with massage without subjecting the head to excessive massage. Blood flow can be stimulated deep within the brain. As the rise and fall of the vibration energy generated by the ultrasonic vibrators are mitigated by the modulators, impact applied by the vibration to the head of the wearer is reduced.