WordNet
n. the cerebral hemisphere to the left of the corpus callosum that controls the right half of the body [syn: left brain]
Usage examples of "left hemisphere".
He knows from the motion of his hand that he has written something, but because he cannot see it, there is no way for the information to arrive in the left hemisphere which controls verbal ability.
Normal people, of which I was one most of my life, don't understand how a split-brain person can be himself and look like himself and speak about himself in the first person singular and walk normally and talk coherently while his right hemisphere doesn't know what his left hemisphere is doing (except for mushroom barley soup in my case).
There was Kent himself, the dominant consciousness, the boss, the inhabitant of the left hemisphere of the brain, who directed the right hand at the keyboard.
What had been lost in the left hemisphere found a home elsewhere or reasserted their primacy in the damaged regions like pioneers returning to a fire-damaged plain made more fertile by the flames.
But the ego is merely our sense of selfhood, and it seems to reside in the left hemisphere of the brain.
People who received injuries to the left hemisphere had trouble with sequential tasks like reading and counting, but they could see images and recall music just fine.
The upshot was that the left hemisphere controlled the logical, linear parts of our lives, while the right directed our all-at-once tasks like encountering a picture or a sound.