The Brain is nothing but an expert technology that controls each and every thought, memory, emotion, the relation of touch, motor skills, vision basically every process that helps with the regulation of the body.
For those who don't know right and left both sides of the brain function differently with thinking. A person who uses left-brained is often said to be more logical, verbal, and successive because these people are often very systematic with their work.
Right-brained people are more relational, emotional, imaginative, and adventuristic in nature. They have a subjective approach to everything.