An Overview of the Triune Brain
The triune brain is something I speak of frequently in both our self defense and martial arts classes. The concept of the triune brain was developed by Paul MacLean. MacLean at one point worked at the United States National Institute of Mental Health as the director of the Laboratory of the Brain and Behavior.
According to Paul MacLean’s theory, the brain is not a single entity. It is made up of three different brains, each layering on top of the other. Each section of the brain developed as humans evolved, catering to our evolving mental and emotional needs; each has its own memory, ability to be subjective, and level of intelligence.
The three sections of the triune brain are as follows:
- Reptilian brain;
- Limbic system (Paleomammalian brain); and
- Neocortex (Neomammalian brain)
There was a point in time where it was believed that the higher levels of the brain, such as the neocortex, had ultimate control over the lower levels. Over time, MacLean realized that the lower systems, such as the reptilian or limbic systems, are perfectly capable of “taking over” the rest of the brain if there is a need to do so.
Over the coming days we’ll take a closer look at each part of the triune brain. I’m confident that after learning a bit about each part you’ll gain a better understanding of how each section of the brain affects your ability to function, exercise sound judgement and – of course – defend yourself.
