There are two basic views (and some sub-categories of each) about how to understand the relationship between the brain and the mind. The first, physicalism, says that the mind is nothing more than an extension of the brain. The second, dualism, says that the mind and brain are different things altogether.
Physicalism insists that there is no difference between the mind and the brain — that the “mind” is simply a way to refer to the results of chemical processes that go on in the neural network controlled by the gray matter between your ears.
“According to strict physicalism, a human being is merely a physical entity. The only things that exist are physical substances, properties and events … The physical substance called the brain has physical properties such as a certain weight, volume, size, electrical activity, chemical composition and so forth … when someone has an occasion of pain or an occurrence of a thought, physicalists hold that these are merely particular physical events — events where certain C-fibers are firing or certain electrical and chemical events are happening in the brain and central nervous system.”*
Since thoughts and feelings are nothing but physical events that result from electrical impulses between neural cells, we can actually connect electrodes to the brain, stimulate it in different ways, and observe which area of the brain “lights up.” We can manipulate that area of the brain with surgery or chemicals and thereby alter behavior, or at least understand what made you act the way you did when you felt sad, or angry, or happy, or attracted to a mate.
Once we know where our different behaviors and inclinations reside, we are well on our way to solving all the mysteries of the origin and operation of imagination, concepts, thoughts, instincts, and morality. Since these are nothing but different kinds of chemical reactions, and “free will” is really nothing but an illusion about the responses the chemicals in your brain have to various inputs from physical events that preceded the actions you take, neuroscientists like will soon be able to explain and control each of them.
You are your brain and your brain is a computer made of meat.
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