midbrain
nounUK /ˈmɪdbreɪn/
US /ˈmɪdbreɪn/
The middle part of the brain that helps you see, hear, and move.
The midbrain helps connect the front of the brain to the back.
RELATED WORDS
OTHER MEANINGS
2. The mesencephalon, the part of the brainstem between the pons and the diencephalon.
The midbrain contains the cerebral aqueduct.
3. A region of the embryonic brain that develops into the mesencephalon.
During development, the midbrain forms from the mesencephalic vesicle.
4. The part of the brain responsible for visual and auditory reflexes.
The midbrain controls pupil reflexes when light shines in your eye.