These days, brain entrainment modalities are in vogue. Unfortunately, however, in my view, entrepreneurs and business people selling these gadgets and tapes seem to benefit more from them then the consumer. Therefore, it is quite refreshing to know that there is a brain-entrainment modality that actually works. Although there is a wealth of clinical data with regard to the beneficial effects of Hemi-Sync, there is a lack of empirical theories explaining the phenomenon. And yet without sound and testable theories, we are liable to lose momentum in our research and clinical work, and something that we know has great value is likely to be considered a fad, a gimmick, something unscientific .
Theory alone can bring forth and develop the spirit of invention.
Hemi-Sync has many applications, and there are even more applications ready to be unveiled by us as we attempt to construct now theories. Based on my empirical research, I wish to propose two theories of Hemi-Sync, in this paper. But before introducing these theories, by merely reflecting on the obtained data and observations in our laboratory, I wish to address a few questions raised in the scientific community with regard to the effectiveness of Hemi-Sync. These are indeed legitimate and important questions that require scientific and data-based answers. Based on solid electoencephalographic data that we have collected in our neuropsychological laboratory, it is quite clear that after a brief period of exposure to Hemi-Sync frequencies, subjects can summon the beneficial effects of this technology at will without the use of any external sources of entrainment.