From ganglion to grey matter, the human brain has had quite a journey of development and evolution. As with a computer, the newer/advanced layers depend on accessing the functionality of the layers below. Unlike a computer, each layer has it’s demands – and sometimes that which the lower layer wants can only be delivered by actions accomplished by the layer above.
What does a layer of brain want besides the basic needs of a cell? Specific chemicals it would seem. Besides sustenance (energy), it seems chemicals are the driving force for a brain’s existence. I really don’t know how the brain’s cells develop a craving for these chemicals or what positive results these chemicals have on the cells. When you develop a craving for that favorite icecream a chemical grant sequence has been setup (a contract). There is an agreement setup between the layers of the brain. They work in collaboration to achieve this goal and the accomplishment of this results in chemicals (dopamines for example) being released to sate the layer that sets up the contract to start. Each layer benefits in some form (how?).
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