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HEMI-SYNC™
Journa
immer 1992
Professional Division
A Publication of The Monroe Institute
IN THIS ISSUE
TMI LABORATORY EVALUATION:
THE EFFICACY OF HEMI-SYNC
FREQUENCIE:
Hemi-Sync’s ability to suppress
resting-state-alpha and,
consequently, support unique
perceptual perspectives is the topic
of this report by F. Holmes.
Atwater.
EFFECT OF HEMI-SYNC ON DENTAL
ANXIETY......
Christopher
an informal, twenty-five-subject
study employing Hemi-Sync to
relieve apprehension during dental
procedures.
» iii
1992 The Monroe Institute
Route 1, Box 175, Faber, VA 22938-9749
LABORATORY EVALUATION:
THE EFFICACY OF HEMI-SYNC
FREQUENCIES
by F. Holmes Atwater —— al)
P. Holmes Atwater is coordinator of TMI's Brainmapping Project.
A retired military officer, he has been a college instructor. scientific
investigator, and behavioral engineer, and has completed graduate
work in counseling psychology. His specialty is the design and appli-
cation of techniques for cultivating propitious states of consciousness.
To be effective, Hemi-Sync frequencies must promote
more than simple changes in consciousness. Many stimuli can
be used to change consciousness, but few are able to provide
the participant with the opportunity for a transcendent experi-
ence or, as Bob Monroe says, a “different overview.” All
research conducted by the Institute is directed solely to the
development of methods and techniques that will aid others in
evolution and growth of human consciousness and percep-
tion. In accordance with this position the TMI Laboratory
continually evaluates the effectiveness of the Hemi-Sync proc-
ess. This includes the Hemi-Sync cassette tapes, Hemi-Sync
formats used in TMI educational programs, special-applica-
tion Hemi-Sync patterns, and the administration of the Hemi-
Sync process in individual PREP sessions in the lab. As
research progresses and technology permits, improved and/or
special-purpose Hemi-Sync frequency combinations are de-
veloped and evaluated. With the advent of newly developed
computer software, the TMI lab can now evaluate the efficacy
of the Hemi-Sync process to a degree never before available.
Last year an independent psychophysiological study of the
Hemi-Sync process was conducted to determine if the tech-
nique could enhance the induction of transcendent experi-
ences. This study was conducted by The Colorado Association
for Psychophysiologic Research, 1013 Twin Sisters Road,
Nederland, Colorado 80466. One of the findings of this study
was that at baseline (an EEG recording taken before any
stimulation) and during stimulation with pink noise, alpha
brain-wave activity was confined to the cortex behind the
Sylvian sulcus (back of the head). In the profession, this
condition is known as “resting-state-alpha.” As the Hemi-Sync
stimulation began, this predominant alpha activity decreased
and a flowing, dynamic pattern of EEG activity accompanied
transcendent experiences in the subjects. The study concluded
that binaural beat stimulation as presented in the Hemi C
process appeared to provoke progressive EEG activity a
panied by subjective reporting of transcendent experienc
interest here, in the following paragraphs, are the study's
804/361-1252
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HEMI-SYNC™ JOURNAL
findings of amplitude suppression of alpha in response to
binaural Hemi-Sync stimulation.
Alpha suppression is being studied by researchers and
therapists who use theta biofeedback as a component in the
treatment of drug and alcohol abuse and obesity. These re-
searchers believe that alpha suppression identifies or is re-
quired to “trigger” or “initiate” transcendent experiences.
(Unpublished data reported independently by Ed Wilson, MD,
and Fowler Jones, PhD.) Using a Neuromagnetometer and
brain mapping with SQUID technology, researchers at New
York University have been studying alpha suppression as well.
They believe that regional alpha suppression may indicate
access to thought processes. Over the last three years of the
TMI Brainmapping Project, alpha suppression behind the
Sylvian sulcus has been the most dependable indicator of an
effective response to Hemi-Sync sound patterns. The Colorado
Association for Psychophysiologic Research reports that un-
Suppressed alpha may be a stabilizing force, providing one
with familiar modes of processing perceived data. Without the
suppression of persistent resting-state-alpha one cannot ob-
tain a different overview.
The characteristic EEG parameters of resting-state-alpha
reveal the individual’s temperament, the way in which the
individual processes and interacts with the world he or she
perceives. The EEG parameters of interest relate to frequency,
amplitude, band width, and the level of dynamic activity. An
individual with a static, medium to high frequency (9-11 Hz),
high amplitude, narrow band resting-state-alpha relates to the
Perceived world differently than an individual with alternative
parameters. These differences are testable using standardized
profiles like the Meyers-Briggs Type Indicator (MBTI). The
ability to modify resting-state-alpha directly affects one’s expe-
rience of one’s environment. If one moves toward an experi-
ence in an expanded state of consciousness and retains one’s
innate resting-state-alpha, one will relate to the perceptual
environment of this experience equipped with one’s familiar
repertoire of acumen. As a result, the altered state experience
lacks fidelity and depth of field and provides little insight.
Alternatively, if one moves toward an experience in an ex-
panded state of consciousness without one’s innate resting-
state-alpha, one will relate to the perceptual environment of
this experience from a novel perspective. Changing one’s
resting-state-alpha effectively transforms one’s perceptual
venue,
Amplitude suppression of resting-state-alpha is only one of
the alterations that are possible with the Hemi-Sync process.
The mixing of numbers of binaural beat frequencies generates
an audioencephalographic interferometry effect which can be
used to transform innate resting-state-alpha or reinforce ben-
eficial alpha states. Some “Focus Level” Hemi-Sync frequen-
cies used do not interfere with resting-state-alpha and allow
the listener to integrate and relate to “tape experiences” in his
or her everyday, familiar life. Other Hemi-Sync frequencies
endeavor to alter resting-state-alpha to provide listeners with
high-fidelity, rich “Focus Level” experiences and, ultimately, a
different overview.
Following is an example of the research involved in the
development of a new set of Hemi-Sync frequencies. A series of
Hemi-Sync tones were assembled and were used as stimuli for
experimental subjects. Brain waves were monitored using a
20-channel computerized EEG (Neurosearch-24, Lexicor,
Boulder, Colorado). Figure 1 illustrates alpha brain-wave
amplitude in microvolts for experimental Subject 1. Notice
that exposure to the Hemi-Sync stimuli BF4, BF10, and BF12
suppresses baseline or resting-state-alpha.
Many people have asked, from a research point of view,
how we know that an individual’s resting-state-alpha would
not change anyway, without Hemi-Sync stimulus. Figure 2
illustrates alpha brain-wave amplitude in microvolts for ex-
perimental Subject 2. In this case, however, no Hemi-Sync
stimulus was provided. As you can see, there is no suppression
of resting-state-alpha.
For the next experiment we exposed Subject 2 to the same
Hemi-Sync frequencies that were used for Subject 1. Figure 3
shows even greater suppression of resting-state- alpha during
Subject 2's exposure to the Hemi-Sync stimuli BF4, BF10, and
BF12.
‘usject 1
Ham Syne Sumi No Staton
Figures wane Figure 2 tour
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rp
Figures von
As stated previously, amplitude suppression of resting-
state-alpha is only one of the alterations that are possible with
the Hemi-Sync process. Band width and frequency can also be
affected. Figure 4 illustrates the baseline average amplitude in
microvolts of Subject 1’s resting-state-alpha. The graph shows
a wide band, low frequency, moderate amplitude alpha pat-
tern. Figure 5 illustrates the BF10 average amplitude in
microvolts of Subject 1’s Hemi-Sync state. This graph shows a
wider band, lower frequency, lower amplitude alpha pattern
‘Subject + Sublet 1
‘arsine BF Staton
Figure 4 co Figures cr
than that of baseline. Turning now to Subject 2, Figure 6
depicts the baseline average amplitude in microvolts of Sub-
ject 2’s resting-state-alpha. Subject 2 has a higher frequency,
higher amplitude resting-state-alpha pattern than does Sub-
ject 1. Figure 7 describes the BF10 average amplitude in
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Summer 1992
microvolts of Subject 2’s Hemi-Sync state. This graph shows a
very wide band, very low frequency, very low amplitude alpha
pattern. Subject 2 seems to have been affected more pro-
foundly than Subject 1 by the Hemi-Sync stimulus.
Bases kcal
Figuie7 te
So whatever happened to hemispheric synchronization?
The coined term “Hemi-Sync” has always been descriptive of
coherent brain-wave activity in response to the Hemi-Sync
binaural stimuli. New software just made available for the
Neurosearch-24 enables direct measurement of this brain-
wave synchrony. This information is available for biofeedback
during a training session or for later analysis of brain-wave
activity.
With reference to our two subjects mentioned above,
Figure 8 depicts a rise in the percent of brain-wave synchrony
from that of baseline when Subject 1 is exposed to the Hemi-
Sync stimuli. Curiously, the percent of brain-wave synchrony
remains high during the postbaseline period. Reviewing Fig-
ure 1, Subject 1's resting-state-alpha returns during postbase-
line. This paradox was evident in the behavior of Subject 1
immediately after the experiment. The subject appeared
slightly disoriented or “ungrounded,” as the saying goes
around here. Within a few minutes, physical activity restored
the subject’s normal orientation. Left undisturbed, the subject
would probably have drifted off to sleep.
Figure 9 shows the rise in the percentage of brain-wave
synchrony from that of baseline when Subject 2 is exposed to
the Hemi-Syne stimuli. In this case the percentage of brain-
wave synchrony diminishes when the Hemi-Syne stimulus
stops. Compare the inverse congruence of Figure 3 and Figure
9. This subject moves from normal waking consciousness
(resting-state-alpha) into a high-fidelity, rich experience in an
expanded state of consciousness and returns well “grounded,”
ready to participate in Focus 1 activities.
subieet 1
Hemi Syne Smut
Subject 2
Figures
The Hemi-Sync process promotes more than simple
changes in consciousness. Hemi-Sync provides the oppor-
tunity for a transcendent experience, an escapade beyond the
narrow confines of familiar knowledge. @
EFFECT OF HEMI-SYNC ON
DENTAL ANXIETY
by _|
Christopher W. Beckner, DDS
Chris Beckner is a dentist in private practice in Hamilton, Ohio,
specializing in pertodontics, the treatment of gum diseases. He is also
acertified hypnotherapist who uses hypnosis with dental treatment to
promote patient relaxation. Dr. Beckner has just completed his first
book, titled It’s All in the Mind: A Guide to Happy and Healthy Living.
Asa dentist, | am interested in providing the best possible
healthcare for patients. As a hypnotherapist, | would like to
teach people how to relax. Unfortunately, for many individuals
relaxation and the dental visit are mutually exclusive concepts.
Because of this, I continually look for ways to make the dental
appointment less traumatic. If | can achieve this, my patients
will be happier and my day will unfold much more smoothly.
One of the greatest stressors for the dentist is the fearful
patient. Patient anxiety has posed a problem for both dentist
and patient for many years. Researchers estimate that more
than fifty percent of the population is not receiving regular