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This
Hemi-Sync tape is an audio-guidance learning tool. Most HemiSync learning
tools involve verbally guided relaxation procedures and the development of
hypnagogic imagery, and are designed to be experienced within an
environment of restricted stimulation.
This tape
does not contain verbal guidance and uses only music and Hemi-Sync
binaural-beating to encourage beneficial brainwave-arousal patterns and
correspondent states of consciousness through neurological mechanisms.
Right and left auditory input is combined in the brainstem's superior
olivary nucleus and routed to the reticular formation that, in turn, uses
neurotransmitters to initiate changes in neurological activity in the
thalamus and cortex.
Remembrance
has a complex blend of Hemi-Sync binauralbeat patterns in the frequency
ranges usually associated with higher (beta) brainwave arousal. The
binaural-beat carrier tones are frequency-matched to the changing musical
keys and therefore difficult to perceive as separate from the music. The
use of musical thirds and fifths as well as changes in key and segues in
sound texture coupled with repetitious melodies make for easy listening.
The music also contains numerous appoggiaturastantalizing delays in the
resolution of melodic themes.
By promoting
coherent brainwave patterns, Remembrance helps to sustain alertness and
focused attention. It may be played as background music with speakers or
on low volume with headphones, and listened to for as long as necessary to
maintain an alert focus of attention.
Some play it
all day at work or for extended periods in a classroom or other learning
environment. It can boost energy when used as background music for
physical exercise, elevate mood, and help inhibit pain.
Brainwaves
can be measured with a computerized electroencephalograph and then
displayed as a map of brainwave activity. Ranges of colors indicate
minimum and maximum amplitude regions.
The following
graph illustrates changes in the percentage of beta brainwaves for one
person while listening to the beta Hemi-Sync patterns imbedded in the
powerful Remembrance audio-guidance learning tool. Notice the increase in
beta coherence depicted in the brainwave maps associated with each
increase in beta.
Scientific
studies provide statistical observations in supporting the concept that
rhythmic sound patterns engender changes in cortical arousal. As the
reticular is responsible for regulating cortical arousal (Swann et al.
1982; Empson 1986; Newman & Baars 1993; Newman 1997a,b; Petty 1998), it is
assumed that the reticular formation serves as the mechanism of change in
arousal levels engendered by externally initiated (e.g., music and
binaural beats) coherent oscillations within the superior olivary nuclei
and the cholinergic neurons within the nucleus reticularis.
Additionally,
four decades of investigation have shown that exposure to such stimuli
under appropriate circumstances can provide access to expanded states of
consciousness (Atwater 1997). Several free-running electroencephalograph
(EEG) studies (Atwater 2001, Foster 1990; Sadigh 1990; Hiew 1995, Brady
1997, among others) suggest that binaural beats induce alterations in
cortical arousal states. These cited studies also document measurable
changes in the extended reticular-thalamic activating system during
exposure to binaural beats because the reticular formation is responsible
for the regulation of cortical arousal. (See Swann et al. (1982), Empson
(1986), Newman & Baars (1993), Newman (1997a,b), and Petty (1998).)
It would
appear that the rhythmic frequencies of an auditory stimulus affect
cholinergic neurons within the nucleus reticularis. Such intercourse
modifies the membrane transport and production of acetylcholine and
consequently results in changes in arousal states. These suppositions are
compatible with current knowledge of the reticular formation and suggest a
neural mechanism, an instrument for the regulation of cortical levels of
arousal using Hemi-Sync audio stimuli.
Directly
relating to the beta Hemi-Sync imbedded in Remembrance is a study (Lane et
al, 1998) that compared the effects of binaural auditory beats in the EEG
beta and EEG theta/delta frequency ranges on mood and on performance of a
vigilance task to investigate their effects on subjective and objective
measures of arousal. Participants (n = 29) performed a 30-min visual
vigilance task on three different days while listening to pink noise
containing simple tones or binaural beats either in the beta range (16 and
24 Hz) or the theta/delta range (1.5 and 4 Hz). Participants were kept
blind to the presence of binaural beats to control expectation effects.
Presentation of beta-frequency binaural beats yielded more correct target
detections and fewer false alarms than presentation of theta/delta
frequency binaural beats. In addition, the betafrequency beats were
associated with less negative mood. Results suggest that the presentation
of binaural auditory beats can affect psychomotor performance and mood.
The study showed that binaural-beat technology has applications for the
control of attention and arousal and the enhancement of human performance.
References
Atwater, F.H.
(1997). Accessing anomalous states of consciousness. Journal of Scientific
Exploration 11(3): 263-274.
Atwater, F.H.
(2001). Binaural beats and the regulation of arousal levels. Proceedings
of the TANS 11 `" Forum on New Arts and Science © 2001 by the
International Association on New Science, 1612 Windsor Court, Fort
Collins, CO 80526
Brady, D.B.
(1997). Binaural-beat induced theta EEG activity and hypnotic
susceptibility. Northern Arizona University. http://www.monroeinstitute.org/research/
Empson, J.
(1986). Human Brainwaves: The Psychological Significance of the
Electroencephalogram. The Macmillan Press Ltd..
Foster, D. S.
(1990). EEG and subjective correlates of alpha frequency binaural beat
stimulation combined with alpha biofeedback. Hemi-Sync Journal VIII(2): i-ii.
Hiew, C.C.
(1995). Hemi-Sync into creativity. Hemi-Sync Journal XIII(1): iii-v.
http://www.monroeinstitute.org/research
Lane, J.D.,
Kasian, S.J., Owens, J.E., & Marsh, G.R. (1998). Binaural auditory beats
affect vigilance performance and mood. Physiology & Behavior 63(2):
249-252.
Marsh, J.T.,
Brown, W.S., & Smith, J.C. (1975). Far-field recorded frequency-following
responses: Correlates of low pitch auditory perception in humans.
Electroencephalography and Clinical Neurophysiology 38: 113-119.
Newman, J. &
Baars, B.J. (1993). A neural attentional model for access to
consciousness: A Global Workspace perspective. In: Concepts in
Neuroscience 4(2): 255-290.
Newman, J.
(1997a). Putting the puzzle together Part 1: Toward a general theory of
the neural correlates of consciousness. Journal of Consciousness Studies
4(1): 47-66.
Newman, J.
(1997b). Putting the puzzle together Part Il: Toward a general theory of
the neural correlates of consciousness. Journal of Consciousness Studies
4(2): 47-66.
Petty, P.G.
(1998). Consciousness: A neurosurgical perspective. Journal of
Consciousness Studies 5(1): 86-96.
Sadigh, M.
(1990). Effects of Hemi-Sync on electrocortical activity. http://www.monroeinstitute.org/research/
Swann R.,
Bosanko S., Cohen R., Midgley R., & Seed K.M. (1982) The Brain - A User's
Manual. G. P. Putnam's Sons: 92.
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