Corpus callosum is the main bond between the brain’s left and right hemispheres. It is sometimes damaged or cut out because of a disease, this is called split brain, in this case the two halves of brain do not exchange information efficiently. In one experiment a word was flashed briefly to the right field of view of a split brain patient and the patient was asked what he saw and because the input from the right field of view is processed by the left hemisphere which is also responsible for verbal processing the patient’s answer matched the word, next the word was flashed to his left field of view and the experiment was repeated and the patient said that he did not see anything but when he was asked to draw a picture with his left hand he drew a picture of the word. The question is are there some stimuli in our environment that we can’t sense but affect our decisions? In other words do we decide or our behavior may be a reaction to the things that we are not aware of?
Decisions are in many cases already made, BUT rational contribution is always made by the persons involved in decision making process.
Our inclinations to do certain things are determined by all kinds of stimuli, information, earlier experiences, and so on, much of which we are not aware of. We don't need to. An inclination is not a decision, and decisions are followed by behavior in which we continue to make choices all the time. So, what is the problem?
It seems similar to what is told to happen in hypnosis: telling a person to do something after hypnosis, that person ( sometime) can do it after hypnosis without remembering the order.
Yes, our brain had already made decision earlier (few second earlier) before we consciously do on that
Each decision, in theory, should be referenced to a decision maker. Each decision maker may differ with his or her experience with the decision.
Brains cannot decide anything. They are automatons, reacting to stimulus input with reflexes plus a great number of action tendencies. If two or more of these tendencies are conflicting (and they often are), then it is the person involved who decides, that is, the whole person of flesh and blood moving around in an environment (as opposed to a homunculus in the brain).
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