|
PTSD
- An Engineering Overview
By John Schreiber
In English, Please
.
In the document "PTSD: An Engineering Overview", I provided
a discussion of what PTSD is in a manner appropriate for scientific
discussion. This was required since "I think it is this
"
rarely passes scrutiny. I had to create a model of the brain, show a
flaw and illustrate how the brain compensates for this error. Through
this I was able to show that the method the brain uses to compensate
for the flaw matches the symptoms of PTSD. The problem is that most
people do not have degrees in Engineering, and the discussion is a little
over their heads. One prominent psychiatrist even noted that most professionals
would get lost. Fortunately, it is the proof which is difficult and
not the actual explanation. It is possible to describe what PTSD is
in much simpler terms.
Those reading about PTSD might have heard a term like "the reptile
brain". While we may think ourselves highly evolved, the truth
is that portions of our mammalian brains are similar to those of reptiles.
This portion, lying beneath our conscious mind, is commonly referred
to as the "sub-conscious". We do not know what muscles make
our heart beat. It is performed automatically by the subconscious. We
need sleep because this reptile mind must perform routine maintenance,
and the tests to ensure everything is fine are interpreted as dreams.
Little thought is given to the subconscious by the vast majority of
individuals on this planet. It simply does what it is supposed to do.
But the reptile portion of our minds has a huge logic error in its design.
Nature knows about this error but, rather than fix it permanently, adds
a mechanism to account for this error. When the subconscious detects
that the error condition exists, it triggers this mechanism. This mechanism
changes the way the brain functions, and the symptoms that result have
become known as "Post Traumatic Stress Disorder".
The first question which must be answered is "What is this flaw?"
To answer this we must first discuss the effect of knowledge. While
a little knowledge may be a dangerous thing, a lot of knowledge is quite
cumbersome. Imagine if there was a single phone book for all of the
world. It would be too big to sit on a desk. Knowing everything may
be a scientific goal, but in the animal kingdom, the mass of this knowledge
slows an animal down. Nature is content with providing an animal with
enough knowledge of survive and reproduce. Everything else is a burden.
The next issue is one of timing. Imagine the plight of a teenager starting
to work at McDonald's. At first there is a lot of information to learn
such as where each button is on the register. Have you ever stood in
line with such a teenager who is trying desperately to find where the
Apple Pie button is? After a week or so, everything that needs to be
learned has been learned. The teenager must then just repeat the same
procedures over and over again.
Nature noticed this pattern in animals where their first few months
of this earth are a desperate search for the knowledge needed to survive.
After that, the animals just repeat the same procedures. There is no
requirement for a simple animal to learn throughout its lifetime. A
short interval after birth would be sufficient to learn what they need
to survive. After that, learning is stopped, and the animal uses its
knowledge to live its life.
What benefit does this system provide? After learning has stopped, the
response time of the animal is decreased. In English, it has faster
reflexes. In a world where survival is often measured in tenths of a
second when lions pounce, the animal with the fastest reflexes survives.
Like the old joke says, when hiking in bear country, your greatest protection
is to walk with a partner your can outrun.
In humans, this period of learning lasts for about 5 years. Children
lose the ability to learn quickly at about the same time as they are
sent to school to learn. Thus, educators stress the importance of parents
taking the time to teach their children by reading to them, teaching
them to count, etc. at a young age. There are even some things which
cannot be learned after that short period in one's youth. Language is
one such example. If a human were actually raised by apes, that human
would never be able to speak. The effects would not merely be Tarzan's
bad grammar. Tarzan would never be able to communicate through language.
Conversely, I have seen a documentary where researchers are trying to
teach a gorilla to communicate using icons on a board. The gorilla never
understood what the researchers wanted. They were about to declare the
program a failure when the young gorilla the mother carried reached
out and communicated using the icons.
There is a another issue of knowledge which must be examined. This issue
is that of out-smarting your opponent. The smarter you are, the more
likely you are to survive. How do you keep razor sharp reflexes but
retain the ability to learn? You add a second portion of the brain which
can learn through an animal's life. That portion is known as the conscious
which is the part of our brains we are aware of. Our conscious does
not know how to make our hearts beat, but our subconscious does. Our
conscious knows how to do long division, but our subconscious does not.
For those who may be confused between the conscious and a conscience,
the conscious is the part of the brain you are aware of. The conscience
is that part of your brain which questions whether doing something is
wrong is a good thing.
I have stated that there is a flaw in the reptile mind which must be
fixed using a mechanism called "Post Traumatic Stress Disorder".
Thus, there is no need to delve into the conscious any further. The
important issue is the flaw.
In simple creatures with only the reptile mind, they learn for a short
period and then cannot learn any more. This system works extremely well
only if the animal has met all possible threats to its existence during
the time of learning in its youth. What happens if a new predator comes
along afterwards? The animal cannot remember the predator is a threat
even after it has seen a companion killed and eaten. The reptile mind
requires a means of adapting to threats to its existence after its short
period of learning. Therefore, after a traumatic event, the mechanism
will be used to incorporate the new threat into the reptile mind.
Since it will take some time to complete, the mechanism provides an
interim solution. It increases the sensitivity of the emotions to the
point of pain. This is done since an encounter with another animal will
provide an emotional response. By amplifying the emotional response
to the point of pain, the animal will run away regardless of whether
the other animal is a threat or not. It is this interim solution which
causes the anti-social behaviour amongst PTSD sufferers.
The next thing the mechanism must do is provide a permanent means of
identifying the new predator as a threat. No longer able to learn quickly,
the mind is forced to use the same technique students have used for
countless years to remember important information: it memorizes the
event. And how does one memorize an event? Repeat the event over and
over again in one's mind. The memory of the traumatic event is replayed
constantly through the mind of the PTSD sufferer because the reptile
portion of the mind is memorizing the traumatic event.
Once it has memorized the encounter and passed all tests to ensure the
memory is firmly in place, the mechanism reduces the sensitivity to
emotions to the normal level. It then stops repeating the memory. All
the person is left with is the association of the traumatic event with
danger. For reptiles of old, this was the association of the new predator
with danger and the immediate response to fight or run away. For soldiers
on modern battlefields, the new association is warfare with death and
the inability to return to the fight. Pilots now identify flight with
danger, and they cannot fly again. Sailors, a fact that I can readily
identify with, see danger on the waves and are not able to return to
sea.
For those witnessing the individual who has gone through PTSD, this
outcome often leads to branding the individual as a coward. What they
do not realize is that the individual has not just gone through the
incident once. The PTSD sufferer has lived the event a hundred thousand
times or more. Imagine if a pilot were to crash his plane, drag himself
from the wreckage, get into another plane and promptly crash that one.
He then repeats this curious pattern thousands of times a day, seven
days a week for months on end. If a pilot were to actually do this,
news reporters would arrive for a humorous human interest story on the
pilot who would not give up. The world would not see the man as courageous.
They would think he was crazy. No sane person would repeatedly get into
an airplane after crashing so many times in a row.
And yet people who have gone through PTSD are thought to be cowards
or crazy because they let a single incident change them. It is not the
single event that changes their minds. People going through PTSD relive
their traumatic event hundreds of thousands of times as their reptile
minds memorize the incident. The individual who has the courage to stand
up and refuse to continue is the sane person. They are the ones making
the correct decision.
PTSD has a number of other symptoms. One of these, the flashback, is
a good example to illustrate how completely the person is reliving the
memory. Someone going through PTSD is really living two lives. One is
the current reality with data supplied by the five senses. The other
is the memory of the traumatic event as it was experienced through the
five senses. Normally it is possible to distinguish between them. However,
if current reality becomes similar to that of the traumatic event, the
person will be unable to distinguish between them. A combat veteran
may hear a car backfire which would provide a similar sound to that
of gunfire. Current reality seems to indicate there is gunfire and so
does the memory. Suddenly he finds himself unable to distinguish between
reality and memory. He has, in effect, flashed back to his time in combat.
If PTSD is a natural mechanism built into the subconscious, why do humans
have such difficulties with it? That arises from the fact that PTSD
developed long before there was a conscious mind to take over the learning
process. In the subconscious, PTSD will proceed rapidly and without
difficulty. It is the conscious mind which plays havoc on the mechanism.
The conscious portion of our minds can generate huge amounts of stress
independent of what is going on in our surroundings. It is possible
for the conscious to generate enough stress to trigger the PTSD mechanism
without any external trauma. Guilt is often the driving factor in such
cases and leads to a condition commonly referred to as a "nervous
breakdown". If you can accept this statement, then all of the randomness
which seems to surround PTSD disappears.
The conscious has the ability to generate enough stress to trigger PTSD
on its own. Therefore, it also has the ability to generate enough stress
to keep the switch which triggers PTSD in the "On" position.
What should only take a few months to process can, if the stress in
the conscious is high enough, continues indefinitely because the PTSD
mechanism is repeatedly triggered. For someone to minimize the time
PTSD takes, it is important to reduce stress to the minimum level possible.
I personally believe our society has problems with PTSD because the
individuals are being sent to the wrong specialists. I would rather
send someone to a specialist who teaches people how to live with chronic
pain rather than a psychiatrist (or teach all psychiatrists how to deal
with chronic pain). The techniques I developed for myself to reduce
the stress work so well that I can literally ignore a pounding headache.
I just relax and divert my attention to some physical work. As long
as I do not think about the headache, I am not aware of it. Such techniques
will work well for individuals who are merely feeding back the stress
caused by the incredible pain associated with PTSD.
Those individuals who have problems coming to terms with the event which
triggered PTSD must use a different method. They must talk out their
problems or write them down if they are alone. Such individuals should
avoid reviewing the memory internally since this causes the conscious
to generate too much stress. They should use the techniques for dealing
with pain in between verbal sessions with the option of writing the
memory out if they are alone.
For soldiers who have seen combat and are reading this, my recommendation
is to stay in close touch with your comrades. Meet with them regularly
and discuss what happened. Do not keep it bottled up inside. If one
is having problems, let the group keep a close eye on that individual.
Check with the family to see how he is while away from the group. Make
sure he does not pull away from his comrades for that will only cause
him greater agony.
I would also caution the wives of combat veterans to be careful when
their husbands return. Emotional hypersensitivity is like having a really
bad sunburn. Even the gentle touch of a lover brings excruciating pain.
Keep a "Buddy List" close to the phone and, if there is ever
a time where you feel in danger, call one his buddies. Let his buddy
come over and talk to him. Do not try to do it yourself for that will
only cause him greater pain.
To finish, I would like to address those readers who know someone going
through PTSD, but have not experienced it themselves. I will begin with
an event which happened to me last week. I was walking along when I
saw a man laying on the ground in agony. I saw a bone sticking out of
his leg, so I bent over and said, "Abracadabra!" Immediately
the man leapt to his feet and shook my hand vigorously while thanking
me profusely. He then skipped off merrily whistling a happy tune.
No one in their right mind would believe that story for the simple reason
that there are no magic words which will immediately heal a broken leg.
There are no words you can say which will make the pain go away. People
with broken legs need to be taken to the doctor to have the bone set
and a cast put on.
As I have shown, PTSD is a mechanism built into the brain designed to
account for an inherent logic error. It is not something the sufferers
just make up. Like any physical injury, it takes time to heal. They
need support and encouragement, not magic words which belittle their
pain. If all it would take to make PTSD go away was a good swift kick
in the seat of the pants, I would gladly have bent down to receive the
therapy. No one would expect Christopher Reeve to jump out of his wheelchair
and "get back onto the horse" simply because someone told
him to do it. Then why do so many people expect PTSD sufferers to do
so?
And to the psychiatrists who deal with PTSD, when someone comes into
your office describing an incident which injured 18 sailors, had one
suicide attempt and very nearly killed 5,000 (a similar incident five
months after mine killed over 2,000), please do not ask him why he hates
his father. Freudian psychobabble has no place when treating those with
PTSD. Not every mental problem is sexual or the fault of the parents.
John Schreiber
Author's Note: As with "PTSD: An Engineering Overview", this
document may be reprinted without the author's permission or compensation
by anyone assisting those dealing with PTSD. The author may be reached
for comment at: JohnSchr@sympatico.ca
Author's Note: This document was written to assist Canadian soldiers
who are enduring PTSD. It may be reprinted without the author's consent
or compensation by any organization or person who is seeking to help those
enduring PTSD. The author may be reached for comment at: JohnSchr@sympatico.ca |