The left cerebral hemisphere of the human brain, which includes areas associated with logical thinking, numerical calculation, and language skills: popularly regarded as the center of rational thought.
Webster's New World
Left Brain Sentence Examples
Most people have heard of left brain and right brain functions, but to understand gross motor skills, it's important to understand how the brain works in relation to these skills.
As for the left brain right brain aspect of this stage of development, the right side of the brain controls movements on the left side of the body and vice versa.
Logical - Also known as "left-brain" people, these are the people who love the world of numbers, math, and the hard sciences.
Some doctors believe the phenomenon occurs due to left-brain injury, a theory that is sometimes reinforced by brain scans and MRIs revealing damage to this hemisphere.