Because the lowering of
carrier frequency—or pitch—is capable of providing more of a sense of
“fullness” and “drive” to a binaural brainwave entrainment stimulus, it is
often mistakenly assumed that such lowering
of carrier frequency actually increases the ability of the
entrainment stimulus to attract neural activity into its train of influence.
This is not so.
Scientific research has
shown that people tend to entrain better to higher carrier frequencies then
lower ones. Simply stated, lower carrier frequencies are generally less capable
of entraining brainwave activity than higher ones, unless the brain is trained to do
so through consistent daily practice. (More on this in a little bit.) This is
due to the fact that overall sound energy (i.e., its number, or frequency, of
oscillations) decreases with the lowering of
pitch.
What carrier pitch loses in
overall energy when decreased, however, it gains in capacity to resonate physical matter—including the
brain—more forcefully. For anyone who has played
in a band, this statement is self-evident. Even if you sound-proof a band
rehearsal room fairly well, neighbors and friends can still complain about the
bass guitar and drums traveling through the sound insulation and walls.
Lower pitches (like drums
and bass guitar) are able to travel through walls in this manner because they are
better able to resonate physical matter at its resonant frequency, the rate of vibration at
which it will tend to pulsate with greatest amplitude. It is this increased resonance effect that enhances
the "driving," "innervating" effect of lower carrier frequencies on the brain when used with effective
brainwave entrainment.
The Good News: Through daily use, the research indicates that
most individuals’ brains can be trained to entrain to lower—and therefore more resonantly powerful—carrier frequencies.
For more answers to your questions on this subject, stay tuned for the next article: Carrier Wave Therapy in Brainwave Entrainment.
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