Tranquility Zone Therapeutic Eye Mask 7932 - In the 1980's, a machine called the Synchro-Energizer was developed that used a pair of eye goggles (with blinking white lighs), a headphone for listening to tranquil music and sound, and an internal beeping mechanism. The concept of this device was to shift one's consciousness brainwaves from alert (beta) to alpha (relaxed) and delta (sleepy). Among th...