This invention discloses an apparatus and method to affect brainwave entrainment by Very Low Frequency eXclusive-OR (XOR) modulation of a Very High Frequency carrier over a premise's power-line Alternating Current (AC) wiring. A microcontroller with stored program memory space is used to store and produce the waveforms that lead to brainwave entrainment by controlling an H-Bridge capable of generating bipolar square waves, which output is capacitive coupled to a premises AC power-line and a light sensing device is used by the microcontroller to determine whether to produce daytime or nighttime entrainment frequencies.
Apparatus to affect brainwave entrainment over premises power-line wiring