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Anatomy: The Human Brain Part 2

The brain is encased in the skull by 22 bones.  There are at least 20,000,000,000 neurons in the neo-cortex section (no one has completed counting them) which are held together by 80,000,000,000 or more (glial) glue cells.  Electrical-chemical messages travel 1000 times per second across the synaptic gaps (chemical bridges between brain neurons).  Each neuron has between 100 and 10,000 synaptic connections.  The brain has the ability to store up to 1000 new bits of information per second.  Using these figures we find that if we could process and record to memory at that rate, it would take more than 300 years to fill all the neuron spaces available.

If the neo-cortex section of the brain were spread out it would cover 400 square inches of surface area.  The neo-cortex burns 400 kilocalories every day.  This part of the brain is only a small portion of the total volume yet it contains 70 to 85% of all neurons and controls all higher mental functions

The entire brain consists of three main parts: the reptilian brain, the limbic brain and the neo-cortex, neo-mammalian or intellectual/creative brain.

The reptilian brain is the oldest of the evolutionary brain systems.  It was the first to develop and although millions of years old, it’s basically the same in humans as it was in early reptiles or dinosaurs.  The reptilian brain deals with the outer environmental and material world, is unemotional, territorial, food and sexually driven and highly motivated towards physical survival.  In humans its developmental stage is between conception and approximately 15 months of age.  The physical and biological functions of the body are interfaced with other parts of the brain but under the control of the reptilian section.  The reptilian brain coordinates wakefulness, self-defense and maintenance of the organism.

In the human species the reptilian brain dominates thought concerning hunting, foraging, organizing the home (in the reptile this is known as selecting a nesting site), mating, establishing boundaries to eliminate outsiders (building fences) and to conform to social hierarchies.  The reptilian brain has no, or very few, functional parts for care or concern of offspring.

The typical behavior patterns of the reptilian brain are ritualistic, considers routines very important and also characteristically displays aggressive behavior with bluffing and threats designed to intimidate or instill fear in others.  Challenges for territorial rights are met with “I dare you” or “ I am” attitudes.  The gestures and body movements of this brain section are choppy and angular when under stress with hips forward and puffing up of the body in an effort to appear as large as possible, like dogs when they walk stiff-legged with their hackles up.  Have you ever been so scared your hair stood on end?  That’s a reaction of the reptilian brain.  

Reptiles and humans who dwell in their reptilian brain, are unemotional, cold towards others and detached from the world around them.  They are slow to learn and balk at picking up new information, preferring to “stay the way I am” and to hold on to things even when they are no longer needed.  Holding on is an attitude that drains ones life energies.  This brain section isn’t capable of innovation, risk taking, transfer of ideas “I already know everything I need to know”, has no ability for reasoning and once a basic pattern is set, becomes stuck in one mode of thinking (high or low gear).

The reptilian part occupies the center of the brain and is directly connected to the spinal cord. It has no capacity for reasoning or innovation.  Although there is the ability to memorize or imitate, there is no ability to recognize similarities.  This is part of the brain we dwell in when we’re in the victim and victimizer mode or the “why are they doing this to me again?” mentality.

This part of the brain only responds to outside stimuli and is unable to generate its own reality.  The reptilian brain has no functional barrier and can’t delay responses to outer stimuli, meaning everything is a knee-jerk reaction.  The functional barrier doesn’t develop in humans until about the age of 7.  When we consider the behavior patterns connected with this part of the brain we can agree with the scientists who contend that some people never do develop the functional barrier.

Larry Miller: I was born in Los Angeles in 1940. My father was a fighter pilot instructor during WWll and we moved from coast to coast, maybe that’s where I got the nomad in my blood. After graduating from high school in 1958 I joined the Marines. That lifestyle wasn’t for me and upon my discharge I went on with my life, and have never looked back. I worked briefly for a Caterpillar dealer in Riverside, CA before moving back to N. California where I was a welder and truck driver for a chemical company. Truck driving wasn’t my calling anymore than being in the Marines, and I went back to work for another Caterpillar dealer steam cleaning dirty tractor parts and welding. They sent me to schools, lots and lots of schools. I spent as much time going to trade schools as I did at work. I went from cleaning parts to apprentice field mechanic, to mechanic to the parts department to satellite store manager in less than two years. They wanted me to move to Sacramento and be a salesman: I moved to Oregon to learn to commune with nature. I went to work for another heavy equipment dealer and was later contacted by the World’s largest Lorraine Crane dealer and offered the position of purchasing agent and general parts manager. In 1967 I was offered a line of automotive parts and supplies and went into business for myself. My business revolved around eleven race cars that we maintained for others, driving race cars professionally and maintaining high end sports cars. I was a championship and regional champion driver. My business was the largest import parts and service, non dealer, in the state until I sold it in 1979. We went sailing in 79, first to Mexico and then Hawaii. I was an award winning Trans-Pacific sailor and sailor of the year, Hawaii, Island of Kauai. An opportunity presented itself in Hawaii during 1981 and I was back in business, importing Japanese auto body and hard parts. I also felt the pull to write and began freelancing for magazines and newspapers in 1982. My main focus in my articles is, and always has been, health, wellness and fitness. Most of us have heard the saying, “Time is all we have.” I disagree. Our health is all we have, because without our health, we have no time. I was a US Olympic team hopeful in racewalking and held all the records for the state of Hawaii. As a sponsored athlete in my forties, I finished first in nine marathons in a row in my division, qualified for the Ironman® and was the state USCF cycling champion five times in Hawaii and Oregon. Celinda and I were married in 1988 after a three year engagement. We sold our businesses and organic farm and sailed back to Oregon. After our sailboat boat was sold, we moved to Joseph, Oregon, two miles from the trailhead into the Eagle Cap Wilderness. We were caregivers for my mother the last ten years she was alive. We moved to New Mexico in 1995 because it was too cold for my mom in Oregon during the winters. Celinda designed, and I engineered and built our strawbale house. I began writing the weekly health column for a local newspaper in 1996, and still do. In 2000, I took the summer off to do a four month, 4000 mile, hike, bike and kayak odyssey. I’d been writing health, fitness and sports articles since 1982 and the journey produced a full-length, nonfiction, first person adventure book, Yol Bolsun, May There Be A Road, which can be bought from Amazon.com and others over the Internet. The summer of 2001 was spent hiking. kayaking, fishing and exploring the southwest. In 2002 Celinda and I spent the summer in Canada learning the hospitality business at a resort in preparation for doing promotion for the resort in the US. Most of 2003 was spent reestablishing the trees and landscape that had died during the stay in Canada. We had a house sitter and the house sitter had an ex-husband, and that’s a long story. In July of 2004 I did a solo kayak trip on the Snake River, taking pictures, writing articles and pencil sketching the journey. I hope to do another kayak adventure on the Snake River during the summer of 2008, on the section I missed in 2000 and 2004. In 2005, I returned to Canada to the resort where we’d spent 2002. I was supposed to be there for the month of June. I’d contacted people I’d met in 2002 and they came back to Canada to fish, hike and spend time at the resort, Echo Valley Ranch and Spa, while I was there. My one month became five and then it was off to Spain to do the El Camino de Santiago as a travel companion with one of the guests who’d returned to Canada in June. During the summer of 2006 a friend from Ireland, who I’d met in Spain the year before, came to visit in NM and we fished, hiked and explored the White Mountains of AZ. He’d never slept out in the wild in a tent before, and it was quite an experience, for both of us. My newspaper articles were put on the Internet beginning in 2002. I was asked to give public speaking engagements, photo and video presentations, on various subjects for the library in Deming, NM and continue to do so. In 2006 I videoed and produced a DVD for the Smithsonian Institute’s travel exhibit “Between Fences.” NMFILMS had a conference by invitation only, which I attended. While attending the conference, I realized that film making wasn’t what I wanted to do but I still wanted to use my sixteen years of experience and enjoyment of videoing and photography. During the winter of 2005, I discovered that no one on record had ever run from the Arizona border to the Texas border, a distance of 165 miles. During the spring and summer of 2006 I trained for the run and the run was completed in October, 2006. In late 2005, I began building and maintaining websites incorporating all the things I enjoyed about video, photography, travel and the out of doors. 2007 has been a summer of upgrading the home and property which resulted in a downgrading of my enthusiasm for being located in one place. If we don’t like what’s happening in our life, we need to change what we’re doing. Celinda and I are ready to pull up roots and move on. I guess I’ve come full circle. I’m ready to revert back to my childhood, and a nomadic lifestyle.
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