Microcurrent Therapies: Emerging Theories of Physiological Information Processing [Abstract]
Smith,
Ray B. NeuroRehabilitation,
17(1):3-7, 2002.
Throughout history, medical
theories that have undergirded medical thinking and practice at any given time
have been tied to the then current knowledge of human physiology. This
knowledge has, in turn, always been predicated on the latest technology
available to researchers. As modern investigational tools come on stream, it is
possible to regress back in phylogenetic time to understand better the
progression of an emerging medical model that will replace much of the current
model and which will serve us in the near future.
The biology student looked
through his laboratory microscope at Stentor, a ciliate protozoan. It consisted
of one cell, was funnel shaped, and attached itself to the microscope slide by
a short tube at its base. The top of its funnel consisted of an opening
surrounded by cilia which beat to create a current of water to guide small
particles of food into the opening.
The student arranged to
drop fine carmine particles on Stentor. At first there was no response, but
then it bent its body to the left, out of the carmine stream. The student moved
the stream to the left and Stentor bent to the right. The student moved the
stream to the right, just over the oral opening, and Stentor reversed the
direction of the beat of the cilia, moving the current, with its offending
particles, away from the opening. The student persisted until finally Stentor
withdrew into its tube. Each time Stentor emerged from its tube more carmine
particles were dropped. Finally, the animal appeared to lose patience
altogether, released the tube from its hold on the microscope slide and swam
away (1). Notably, Stentor had no nervous system, no endocrine system and no
brain.
The animal body, whether
protozoan or man, maintains its homeostasis between the internal and external
environment by physiological communication processes. The two information
processes at the center of present medical thinking are 1) “nervous
coordination,” consisting of pathways between sensory neurons via afferent
pathways to either the brain or to reflex ganglia, thence to effector neurons,
thence to muscles, and 2) “chemical coordination,” which involves the endocrine
glands, neurosecretory neurons, and other tissues that secrete chemicals
directly into the blood stream that then attach to receptors on cells that are
sensitive to them and thereby change their functioning.
In the 1980’s medical
science became aware of a third, basic communication system, the peptide
“ligand-receptor system,” in which a network involving the neuronal, the
hormonal, the gastrointestinal and the immune system communicate with one
another and the rest of the body via peptides and messenger specific peptide
receptors. While we have known that the nerves and endocrine glands manufacture
messenger chemicals, and that the gastrointestinal membranes comprised the
largest endocrine “gland” in the human body, we did not know that immune cells
also make, store, and secrete neuropeptides which serve to communicate and
interact with the other communication systems to control the tissue integrity
of the body. Like the others, the peptides manufactured by the cells of the
immune system also can regulate mood or emotion.(2)
Pert states, “Let me
summarize the basic idea I have been developing. The three classically
separated areas of neuroscience, endocrinology, and immunology, with their
various organs – the brain; the glands; and the spleen, bone marrow, and lymph
nodes – are actually joined to each other in a multidirectional network of
communication, linked by information carriers known as neuropeptides.” (3)
Even though the discovery
of the third major communication system in the body began with Pert’s discovery
of the opiate receptor in October, 1972, and research on it has continued
through the 1980’s, and 1990’s, knowledge of that system has still not entered
mainstream medicine. If we can rely on past timing it may have another 20 years
to wait.
Actually, the
ligand-receptor system was almost certainly at work in controlling the behavior
of Stentor in the illustration given above. One celled organisms were very busy
maintaining their own internal homeostasis, signaling each other, chasing down
and devouring (and digesting) food, avoiding danger, and duplicating themselves
either sexually or asexually. Buchsbaum and Milne state, “for our purpose it is
enough to keep in mind that a protozoan is not comparable to a single cell of a
man but to his whole body. …it is at least as remarkable that protozoans are
able to carry on all the complex processes of life within a single microscopic
globule as that many-celled animals can do the same thing through the combined
activities of vast numbers of walled-off and specialized units.”(4)
The ligand-receptor
peptides that protozoans used are almost certainly the same or nearly identical
to the ones that man now produces. Hickman notes, “In the long and important
chemical evolution that preceded the advent of living organisms, the groundwork
for the basic plan of physiologic mechanisms was laid down. …by its very
nature, the number and types of chemicals were tied to the basic process in
which carbon, under the influence of radiation energy were synthesized into
compounds that progressed to protein molecules, the formation of nucleoproteins
and high-energy phosphate bonds, the electron transfer system of metabolism,
the selective diffusion of organic molecules, the enzymatic action at all steps
of the metabolic process, and other functional aspects, all of which evolved
during the preliminary biochemical evolutionary process….
“During the so-called
organic evolution that gave rise to the great diversity of life as we now know
it, there have been very few biochemicals added to organic life.” (5)
His point is that due to
the nature of the process, animals were forced to share the limited compounds
that could be made. Hickman wrote that in 1967, but it took the advent of new
technology in the 1970’s to prove him right. It is now known that the protozoa
produce most, if not all of the same peptides that cells in our immune system
currently manufacture and secrete, or as Bentley put it, “It is now generally
accepted that vertebrate hormones and their receptors may have evolved from
identifiable counterparts among the invertebrates.”(6)
In the process of
evolution, then, while one celled animals carried on intracellular and
extracellular communication by simple diffusion processes, as animals became
larger it was necessary to develop specialized cells to manufacture and carry
peptides to distant parts of the organism to cells that were specializing to
provide movement for the organism. These were nerves and muscle tissue. Later,
groups of cells were set aside to specialize in the manufacture and excretion
of specific chemical substances that could be carried throughout the organism
by the newly acquired circulatory system. These we now know as endocrine cells,
or glands, when grouped.
These systems are still
evolving. Neurosecretary cells are neurons that still manufacture peptides and
secrete them directly into the blood stream. They are sometimes thought of as
an evolutionary link in the chain that unites the neural and endocrine systems.
They represent the final pathway for conveying neural impulses to the endocrine
system.(7) Among the hormones they make are epinephrine, vasopressin, oxytocin,
and the hypophysiotropic hormones. (8)
At this point in our
evolutionary history, in addition to the neurosecretory nerves, many cells that
manufacture and secrete endocrine peptides are not all collected nicely into
specific glands, but are still somewhat scattered about, such as the Islets of
Langerhans scattered about in the pancreas, or the walls of the gastrointestinal
system which comprises the largest “endocrine gland” in our body at present,
with numerous types of hormone-containing cells dotted along the epithelial
lining of the gastrointestinal tract.(9) Toward the last of the 20th century it
was found that areas of the cardiac atrial muscle manufacture and secrete
endocrine peptides.(10)
The body’s immune system
could be considered the most diverse “endocrine gland” of all were it not for
the fact that it has not been set aside to make a specific hormone, but appears
to still be manufacturing a wide spectrum of the peptides that have been
carried over from the protozoa in the course of evolutionary time. Not only
have receptors been found on immune cells “for virtually every peptide… we
(have) identified in the brain,” (11), but it is now known that all of the
white blood cells manufacture all of the peptides that the other parts of the
system make: neurotransmitters such as seratonin, dopamine, norepinephrine,
endorphins, and so forth.(12)
And the brain is far from
being the center of a center for hardwired reflexes, running the body in a more
or less mechanical, reactive fashion by electrical stimulation across the
synapse as we previously saw it. In fact it is speculated that no more than 2
to 4% of the peptides leaving the pre synaptic membrane actually act on a post
synaptic membrane in its immediate vicinity, the remainder traveling across
intracellular space as far as 4 inches to their receptor cells.(13)
Another recent author
refers to the brain, not as a hardwired machine in which electrical stimulation
across the synapse runs the body in a more or less mechanical, reactive
fashion, with little room for flexibility, change, or intelligence, but as an
oversized neurosecretory gland in which all kinds of chemicals which it
manufactures and which bathe it have their effects. “Indeed, hormones are so
intricately involved in neural events that some researchers no longer picture
the brain as a machine or computer but consider it instead to be a gland. …It
is becoming increasingly clear that our control center is not only a place, but
a process involving the interrelationship between the brain, our hormones, our
biochemistry, and the environment.” (14)
While this third
physiological information system is waiting its turn for entrance into the
medical curriculum, another, perhaps more disquieting finding is standing in
the wings: In the human, at least, one’s thoughts can directly influence the
contents and functioning of the ligand-receptor system, so that negative thoughts
can not only increase cortisol levels and decrease the production of immune
cells, positive thoughts can increase one’s level of endorphins, dopamine, sex
hormones, and so on, and actually increase the number of immune cells
circulating in the blood system.(15,16)
The final addition to the
reigning confusion is going to be the connection between energy fields, either
internally generated or externally applied, as they interact with this new
physiological communication paradigm.
While the energy emitted or
transferred through crystals may not readily enter the medical curriculum any
time soon (17), medical educators can no longer ignore studies showing the
healing power of concentrated intention (sometimes called prayer) (18), or
therapeutic touch (called the laying on of hands by some practitioners). (19)
A fast expanding school of
psychotherapy analyses changes in the body’s neuromuscular energy system to
discover and subsequently treat psychological problems by adding energy into
the system. They theorize as follows, “The thought field, like any field,
exists as a pattern or form with certain degrees of stability or homeostasis.
The goal of (psychotherapy) is to profoundly alter the integrity of such
pathognomonic energy fields at sufficiently relevant levels, so that a return
to the previous forms becomes less probable or even impossible.”(20)
The medical use of magnets
is relatively new to the scene, but is probably here to stay. (21)
Acupuncture is also
apparently a recent but permanent fixture in American medicine. It deals with
an energy system which is conceptualized to flow throughout our body, both at
the subsurface and deeper levels. The unimpeded flow of this energy is thought
to have everything to do with our health and wellbeing. (22)
Finally, physicists seek
new measuring techniques with which to measure “subtle” energy in the Fourier
transform relationship between information patterns in the direct space domain
and the frequency (wave number) domain. They think in terms of dual four-space
frames imbedded in a nine-space frame, which is, in turn, imbedded in a
ten-space frame which is imbedded in an eleven space frame or energy dimension.
If they are out there, they are thought to be almost certainly a real, active
force in our body’s physiological communication system. (23)
For now we know that if
small amounts of microcurrent is applied across the brain in what we in the
U.S. call cranial electrotherapy stimulation (CES), neurotransmitters that are
out of homeostasis due to some prior, reasonably prolonged stress reaction,
whether it be psychological or physical such as drug abuse, will come back into
homeostasis and any concomitant anxiety, depression or sleep problems will
subside. (24, 25)
We know that if
microcurrent stimulation is applied to broken bones that have refused to heal,
they will begin to mend. (26)
We know that when
microcurrent is applied into and nearby small cancerous growths in the lung,
they will disintegrate and die. (27)
We know that if we put
microcurrent into the wrist over the artery pulse points in patients who are in
pain, the brain’s EEG pattern will normalize and the pain will be significantly
reduced or disappear altogether. (28)
We know that just a few
minutes of microcurrent applied near arteries and veins on the feet will reduce
physiological stress and pain. (29)
As noted above, earlier
animal research showed that microcurrent stimulation to the head normalized
relationships between neurotransmitters in the brain, while other animal
research found that microcurrent applied to the skin increased the presence of
ATP in the stimulated areas by 500%, increased the inflow of amino acids to the
area as well as protein synthesis. (30) But we had no way to account for the
normalization of the EEG, the reduction of pain or the generalized relaxation
response that result when areas over major arteries are stimulated. Now we can
be fairly certain that microcurrent, applied this way, is stimulating numerous
peptide responses from immune cells flowing beneath the electrodes. Or as Bauer
theorizes, an electromagnetic field may act in the same way as a hormone upon
the cell membrane, causing a “perturbation” or repositioning of the molecular
plasma membrane of cells. This in turn may influence membrane enzyme systems by
favorably altering stereoscopic configurations of molecules, essentially
holding membrane molecules in the correct stereoscopic configuration or
orientation for chemical reactions to take place. (31)
We don’t know why it
prevents or cures migraine headaches, but it does (32), why CES applied across
the head can significantly reduce fibromyalgia pain throughout the body (33),
or why it reduces arthritis pain or hip leg and foot pain in diabetic
neuropathy. (34) We don’t know why patients with reflex systemic dystrophy and
patients with multiple sclerosis often respond to it with a reduction in
symptoms. (35) We have yet to learn why phobic patients and those with post
traumatic stress dysfunction, or those with obsessive-compulsive disorder, or
those with bipolar disorder are often apparently completely cured with only one
hour a day of stimulation for three weeks. But both research and clinical
experience show that they do. (36)
To summarize, if we are to
understand the body’s communication systems, we have to look farther back in
our animal history than we have done so far. We also have to look forward into
the newly burgeoning studies of energy, both those that are generated within us
and those that impinge upon us from without. But we can remain confident, while
we continue those investigations, that medically applied microcurrent energy
has a basic, interactive, regulatory role in the body’s communication systems,
whose vast potential is yet to be completely investigated.
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