December 27, 2011 in Blog by Dee
Left Brain and Right Brain Research Facts
By Stephanie Mayberry
When people refer to the “right brain” and “left brain,” they are speaking of the left and right hemispheres of the cerebral cortex. The cerebral cortex is situated on the outermost portion of the cerebellum, which is responsible for balance, coordinating muscle movements and maintaining posture. There are many myths and misconceptions surrounding the “left brain, right brain” concept. For instance, the belief that “right brained” people are artistic while “left brained” folks are more logical is a bit of an exaggeration. In fact, it is when both sides of the brain are working together that your thinking is at its best.
The Cerebral Cortex
The cerebral cortex lies within the cerebrum, the largest and most developed of the five major sections of the human brain. The cerebral cortex comprises the outermost portion of the hemispheres. It is responsible for emotion, thought, fine control of movement, learning, reasoning, speech, interpreting touch, hearing and vision, perception and planning. The cerebral cortex has been the focus of interest for neuroscientists as they attempt to better understand how the human brain functions. Because this section of the brain is responsible for higher functions, it is often where research is concentrated. For as much as we do know about the human brain, there is still a vast amount of information that is not known, and the scientific community acknowledges that we still have much to learn.
The Cerebral Hemispheres
The cerebral hemispheres are two halves of the specialized section of the brain located in the cerebral cortex. The two hemispheres, called the right hemisphere and the left hemisphere, are better known to the layperson as the “right brain” and the “left brain.” Each hemisphere is specialized to direct certain tasks. For instance, the left hemisphere in right-handed people is specialized to direct language, calculation, writing and speech. Likewise, the right hemisphere directs visual face recognition, spatial aptitude and certain facets of music production and acumen.
The Left Brain
Generally speaking, the left brain controls arithmetic and writing skills, comprehension and speech. Logic is also a function of the left brain, which is more linear in thinking patterns, rational and analytic. It manages step-by-step problem solving. This is where sequencing is managed as well as keeping track of time.
The Right Brain
The right brain is responsible for controlling artistic and musical skills, spatial ability and creativity. This hemisphere is more intuitive, forming conclusions based on patterns that may not be complete and making decisions based on feeling, hunches and visual perceptions. It allows for seeing things as a whole and identifying overall patterns. It is not dependent upon facts or reason as a basis for drawing conclusions.
Two Hemispheres Working Together
The left and right hemispheres work together via the corpus callosum, a bundle of fibers that joins the hemispheres together. The corpus callosum transports messages from one hemisphere to the other. The right hemisphere controls the left side of the body and the left hemisphere controls the right side of the body. That is why if there is an injury to the right side of the brain, the left side of the body may be weak or feel other effects. It is estimated that in approximately 93 percent of people, the left hemisphere dominates in language and hand use.
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