Some neuroscientists believe that the function of the human brain is best explained by the lateralization theory, which means that the right and left hemispheres of the brain perform very different functions and that the two sides communicate through their connections. So what does the left hemisphere control?

The human nervous system is the most complex of all the organs in the body. It plays an extremely important role, controlling almost all life activities in the human body, from basic things like breathing, chewing and swallowing to complex things like thinking and reasoning.