Left Brain - Right Brain

What Is the Left Brain-Right Brain Theory?

The human brain comprises two hemispheres separated by a bundle of nerves. The left brain controls movement for the right side of the body, while the right brain directs the left side. Different neural regions are responsible for different functions, such as information processing, short-term and long-term memory storage, sensory-data collection, language, logical reasoning, and more. One widespread theory about the brain suggests that people who are left brain dominant are more quantitative, logical, and analytical, while right-brained individuals are more emotional, intuitive, and creative free spirits; however, there is no evidence to support these classifications. On the contrary, most behaviors and abilities require the right and left side of the brain to work together to achieve a common objective. The brain of an accountant is likely to be similar to the brain of a potter. More left brain-right brain facts and myths can be found below.  

All Sides of the Brain at Work

While there is no evidence for the left brain-right brain theory, some areas of the brain are more active than others during particular tasks. For example, Broca’s area is linked to language and is located in the frontal lobe on the left side of the brain. Wernicke’s area is linked to speech and is located in the posterior section of the superior temporal gyrus, also in the left hemisphere. Meanwhile, the limbic system—which includes the amygdala, hippocampus, and thalamus—carries out emotions, like fear, has other functions involving memory and attention, and resides in multiple parts of the brain.



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