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The Basic Design of the Brain
How the 'triune’ brain came into being and what actually happens in it.
Оглавление…unto every one that hath shall be given, and he shall
have abundance: but from him that hath not shall be
taken away even that which he hath. ― Matthew 25:29
The brain is a complex structure that supports human life. Its configuration reflects the entire evolution of living beings, as it contains structures that share life support functions closely related to each other.
The conditional division of the human brain into functional levels has long been proposed. For example, according to ancient Jewish sources, the brain contains 1) Rauch, the hypothalamus, which is responsible for the needs of survival; 2) Nefesh, what is called the limbic system, which shapes feelings, emotions and desires; 3) Neshamah, the cerebral cortex, i.e. intelligence, strategy, philosophy and control over the other two levels.
The ancient Jewish description generally coincides with the modern view of the structure of the brain. Today, it is also schematically and functionally divided into the 'reptilian brain’, 'mammalian’, or emotional brain, and the cerebral cortex. All these conditional levels functionally correspond to the purposes mentioned by the ancient Jewish researchers.
The first and most ancient level is the 'reptilian brain’. It appeared 150 million years ago and is responsible for three main functions related to individual survival. The first function is security. Instant solutions that determine the degree of danger using the 'fight-or-flight’ algorithm. This widely used formula for responding to danger does not mention another possible option – to freeze.
The second duty of the 'reptilian brain’ is actions related to the search for food.
And finally, its third function is activities aimed at the continuation of the species, which includes finding and identifying objects suitable for reproduction.
The 'reptilian brain’ is constantly in operation, but a person is not aware of its activity, because the main indicator of the effectiveness of this brain, its KPI (key performance indicator), is speed and reliability, and not awareness. Awareness is as energy-intensive as it is slow and ambiguous. You can get eaten before you even think about it.
Above the 'reptilian brain’ is a structure called the 'mammalian brain’, or emotional brain. These structures appeared about 50 million years ago and help individuals survive in the group.
The emotional brain is the brain of social relations that helps structure a herd, tribe, pride, group, or society. Power and submission are behaviours that are shaped by this particular level. This brain is also involved in procreation activities, but in a specific form: to make an impression – to get an impression.
The 'mammalian brain’ is the centre of striving for superiority, seen as a resource for the exclusivity of the distribution of genetic material. Its structures allow a person to 'understand’ pets and be fascinated by 'communicating’ with them, and this 'understanding’ is, in a certain sense, true. It is this level that is responsible for a person’s experience and attention.
And finally, about two million years ago, the topmost level appeared: the structures responsible for the function called consciousness. If everything is more or less clear with the previous levels, then there are various misconceptions about the work and purpose of this level.
Most people imagine that the functions of consciousness include such important abilities as planning, developing military doctrines and scientific theories, writing novels and poems, writing theses and painting, creating movies and gambling. But all of the above and much more are just related elements, a by-product that arises in the process of its main activity and its main purpose – conscious adaptation to changes in the environment.