Can you please direct me to some research/articles/case studies/ etc about the science behind this 'simultaneous voices' coming from different angles and how that is supposed to accelerate our learning & emotional state?

I understand the science behind the holosync technology but not so much the unconsious processing part? I have library collection and have read that accompanying CD leaflet but this is not go towards explaining the " why" it works?

Please advise,
thanks