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Left Hemisphere: Objective, Analytical, Logical, Classical

For the majority of individuals, the left hemisphere is trained to be analytical, to look for components and strive for details. The data received from the different sense organs are gathered and assembled to arrive at a general idea and then analysed to draw a comprehensible, detailed picture consisting of the different components. For example, the information received from a flower is divided and analysed by the left hemisphere as petal, stem, stamen, and pollen. The left hemisphere is almost always dominant in both speech and handedness as well.

Time is a tool of the left hemisphere. The left side of the brain gathers the information and arranges it in timely succession. That is how we sense the past, present, and future. Since the successive accumulation of memories creates the notion of time for us, time has a trajectory that extends from the past to the future, and not the other way around. As such, it mimics time as understood in classical physics. In contrast, time in quantum mechanics can be symmetric and flows in both directions.

The left brain is responsible for finding meaning in the data it receives. The left brain extracts the details and draws a comprehensible picture out of a wide array of incoming information. Therefore, it has to be judgemental to be able to draw a definite scheme. The analytic left hemisphere critically investigates the information and arranges it in a meaningful, logical, and rational fashion that we can live with, filtering out any unrelated data throughout the process. This is how our left brain hemisphere defines, categorizes, and draws a comprehensible, definite classical portrait out of the “big picture.” It pulls out a tree out of the jungle and displays it in front of our eyes.
Individual pieces of information are methodologically arranged and filed. The sensibly arranged data is the basis of our logic and the origin of our reasoning. Using logic, we can conclude that if A is bigger than B and B is bigger than C, then for sure A has to be bigger than C. Through logic, the left brain sketches a solid and dependable objective reality in front of our eyes. Logic is the domain of classical mechanics. .Therefore, we can conclude that the left brain helps us to sketch the classical level of reality. Classical mechanics is all about definite situations and certainties. Please note that left hemisphere tries to make sense of events even with partial cues. However, the elaborate rationalization effort of the left brain makes it prone to erroneous perceptions.

The left brain is also the origin of the sensing self. The left hemisphere creates the sensation that we are isolated as individuals. It defines the boundaries of our body—where we begin and where we are located in space. It perceives the self as an independent character. People with left brain damage do not distinguish themselves from the rest of the world.

In addition, the left hemisphere is responsible for learning motor skills and controlling higher voluntary movements. During bodily movements, we have to identify an isolated body (our own) and its relationship to the environment. It is well known that damage to the left side creates disorders of learned voluntary movements. The asymmetry of motor control in the right and left hemispheres is well demonstrated by the fact that more people are adept at using their right hand that is fed by left brain, than their left.

Language ability mainly originates in the left hemisphere as well. Damage to the angular gyrus in the left hemisphere may selectively destroy a person's ability to read and speak. Such a patient may see a printed page with the right hemisphere, but the words will have lost their meaning. Damage to the Wernicke's area, near the base of the left temporal lobe, eliminates the capacity to understand spoken language. Speech continues to be heard, but the meaning is lost. Speaking involves isolating sounds and forming specific words. This is in line with the classical level of reality, where components are isolated and separated. At the quantum level, everything is entangled and can be treated as one.

In order to describe the information it receives, the left hemisphere dissects the incoming data into words and probes their meanings individually and within the context of a sentence. This is part of analytic function of the left brain. In the depth of our awareness, we find a vast array of chaotic data playing in the background. The left hemisphere helps us to filter, reduce, and arrange only the related data so that our speech communicates a comprehensible, logical, and classical state of mind. In another words, it helps us to make meaningful statements that communicate a logical situation acceptable to our common sense. If one verbalized whatever passed through his or her background thoughts, we would call that person insane. Autistics and schizophrenics show such left hemisphere disorder and therefore lack the above ability.

“Making sense” means that a huge amount of data is eliminated during the process of speaking. Similarly, data is rigorously reduced as we come from the infinite information at quantum level, which is related to quantum uncertainties and superposition of states (simultaneous existence of all possible states of reality-explained later in the article) , to a focused and just one certain and logical state observed in classical level of reality.
Jill Taylor talks about “brain chatter” as another phenomenon attributed to the left brain. We are all familiar with it. It’s the voice in our mind that is always talking. It tells us what everything is. It tells us what is right and what is wrong, what are we allowed to do and what we should avoid. It repeats over and over again the details of our life so we can remember them. It is the creator of self. The left hemisphere strives for individuality and independence.
Without it, we lose track of our life and our identity. In its absence, we are like electrons in a Bose-Einstein condensate, in which we lose our identity. [8]What is left is a feeling of oneness, an immersing into the whole of existence.

Another function of the left hemisphere is platform formation. By this process, the brain creates a library of past experiences, so that when we are faced with a similar situation we draw on scenes that we have filed away, evaluating and responding to the new situation with minimal attention and assessment. One might say that the left hemisphere has already “set the stage” for new events to arrive. It has pre-created a familiar scene based on our previous experiences and its understanding and interpretations of those experiences. Our left brain is filled with these ingrained patterns, which we use to predict, plan, and carry out everyday activities. When we talk about a winter day, a cold and snowy condition automatically comes to mind. However, sometimes a day in winter can surprise us by being mild. This illustrates that although these patterns are usually very helpful, at times they distance us from reality. These pre-established patterns are the origin of our beliefs as well. We evaluate and judge every new encounter based on these established beliefs.

We may speculate that these thought pattern loops also create our classical level of reality. If the left hemisphere already has established logical loops and scenes that are consistent with rational classical level of reality, then any new incoming data is perceived within the context of these scenes. Any unrelated and illogical data is ignored during the process. New experiences only further develop these modules and fortify the pre-established classical level patterns.
Calculation and arithmetical reasoning are also attributed to the left brain. In mathematics, we divide the whole into the integers and assess and calculate the individual integers and detect the abstract relations between them.

Considering all this, one may suppose that the left brain is the leading, more highly evolved, and intellectual hemisphere. All of our higher functions relating to the environment, at the classical level, are carried out by the left brain. Mind you, the above sensations and functions are learned from the embryonic era onward. It seems that the left hemisphere exists as a clean slate at the beginning. The learning and conditioning comes after. After severe damage to her left hemisphere, Dr. Taylor had to retrain herself to obtain the above skills during her recovery.

It seems that the left brain receives the incoming data from sense organs. Then by conditioning and analysing  the left hemisphere creates a simpler, more comprehensible, and dependable objective world. In most instances this fabricated world is sufficient for us to run our everyday life. In fact, the left hemisphere in the human brain is bigger than the right hemisphere when compared to lower species, and its functioning distinguishes us as a more sophisticated animal. We owe most of our progress and scientific achievements to the left hemisphere’s function. However, it is notable that the perception it creates is manipulated to certain degree and can be different from actual reality.

Anosognosia is a rare syndrome associated with right brain damage. Patients who suffer from this disease have only one functioning hemisphere, the left. Neurologist Vilayanur Ramachandran reported on a patient of his who suffered with the above syndrome; the left side of her body was paralysed  but she was ignorant of this fact. When she was asked to point to the examiner’s nose with her paralysed left hand, she truly believed that her fingers were a couple of inches from the examiner’s nose, when in reality her hand lay paralysed next to her. According to Ramachandran, this kind of self-deception arises from a defence mechanism in normal persons, wherein the left brain tries to maintain a consistent picture of the world despite the staggering amount of information flooding the brain at any minute. This mechanism keeps the brain from succumbing to directionless and indecision due to the explosion of possible scenarios produced from the material available to the senses. [9]
In addition, the patient’s response may be a defence mechanism of the left brain whereby it tries to keep perception of self intact. By denying the paralysis of her left side, her left brain was trying to maintain the integrity of the person.

Bose Einstein condensates are extremely low-temperature fluids (about zero Kelvin). In this state, different particles have no identity and cannot be distinguished from each other. 
Sally P. Springer and George Deutsch, Left Brain/ Right Brain (New York: W. H. Freeman and Company, 1998) 
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