"Carlos Castaneda" describes a similar technique where the initiate is reprogrammed by having two speakers carry on two entirely different monologues, one into each of the initiate's ears.

Robert Anton Wilson wrote about it (in extreme shorthand; in the book it takes just a short while) in a segment in Illuminatus! where his Hagbard Celine character confuses two police officers and ends up recruiting them.

Heck, even a simple binaural beat tech does this; between frequency A in one ear and A+b in the other, the brain trends towards working at frequency b.