The little brain

What it does

The cerebellum sits under the back of the brain. It compares what you intend to do with what your body is actually doing and makes rapid corrections, giving your movements their smoothness and timing. It also helps with balance, posture and learning skills like riding a bike.

Why it matters

Alcohol affects the cerebellum early, which is why police roadside tests check balance and the ability to touch your nose with your eyes closed.

Nearby

• The pons
• The occipital lobe
• The medulla
• The hearing and balance nerve

Read more

• Cerebellum — Wikipedia