theories of Hemi-Sync in this paper. Before introducing these theories, by merely reflecting on the obtained data and obser- vations in our laboratory, I wish to address a few questions raised in the scientific community with regard to the effective- ness of Hemi-Sync. Dr. Lester Fehmi, one of the foremost authorities in the field of applied psychophysiology and brain 804/361-1252 --- PAGE 2 (OCR) --- HEMI-SYNC™ JOURNAL research, once stated that he believed that Hemi-Sync could drive the brain to enter certain states. At the same time he emphasized, “. but it doesn’t teach you how to get there. It’s like a pill; in a way you don’t know how the pill works . . . and you may end up somewhat refreshed but if you had the option to get on a device that would allow you to learn to create the permissive conditions for the creation of this synchrony, then you’d be in much better shape, because then you could apply that anywhere without the tools and begin to learn how to function in everyday activity while doing that” (Hutchison 1986, 222). Another prominent scientist, Dr. Elmer Green, remarked that we should not try to drive the brain but to help people learn to achieve hemispheric synchro- nization without external sources of brain entrainment (Hutchison 1986). . . 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... These are indeed legitimate and important questions that
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Hemi-Sync® Journal 1992-2 (Spring) · 1 Hemi-Sync® Journal 1992-2 Spring.pdf
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require scientific and databased answers. Is Hemi-Sync a pill? Are we promoting dependency ona tape and a tape recorder for the rest of one’s life? From solid electroencephalographic 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. In several studies it was clearly demonstrated that subjects, by merely counting from one to eleven and saying “Access Channel open,” were able to achieve full bilat- eral synchrony (Sadigh 1990, 1991a). Furthermore, unlike EEG biofeedback training, which is limited to training in a specific state of consciousness (i.e., cognitive or somatic relaxation), Hemi-Sync can promote training in a variety of states ranging from active concentration to sleep. To those who have understandably questioned the effectiveness of Hemi-Sync and its potential to be more than an external driver, we offer our data and findings—let them speak for themselves. Theories of Hemi-Sync Based on the findings of several studies presented in the HEMI-SYNC™ JOURNAL (Sadigh 1990, 1991a, 1991b), I wish to propose two theories of Hemi-Sync, namely the State Enhancement Theory (SET), and the Hemispheric Communi- cation Theory (Hemi. Com.). The State Enhancement Theory (SET) One important observation that we made in a number of
Hemi-Sync studies was that subjects exposed to the same Hemi-Sync signals achieved bilateral synchronization at dif- ferent frequencies. One explanation for this phenomenon is that Hemi-Sync goes beyond “blind” entrainment. That is to say, unlike other brain-entrainment modalities which force the brain to produce certain frequencies, Hemi-Sync actually collaborates with the brain to enhance its naturally dominant state. In summary, according to this theory : Within a relatively defined frequency range, Hemi- Sync guides the brain to enhance and synchronize itself at its own dominant and naturally occurring frequency and state. Should we be able to continue to support this theory with further research, we may conclude that Hemi-Sync is indeed a technology beyond entrainment and, for that matter, one of the safest modalities for health improvement and enhance- ment. The Hemispheric Communication Theory (Hemi. Com.) Based on studies observing the electrocortical activity of patients undergoing psychotherapy, it appears that moments of insight and “clarity” are preceded by moments of bilateral synchrony (Sadigh 1991b). This is an important observation, since in psychotherapy insight denotes an integration of cog- nition (left brain) and affect (right brain). In summary, this theory may be stated as follows: Certain Hemi-Sync frequencies allow various uncon- scious ego-defense mechanisms to be transcended, which will in turn facilitate communication between