Answer:
cerebellum
Explanation:
This part is in at the bottom of the brain. The cerebellum is the side that is sensible of being damage because of it position. At the same time, when there is a damage here is clear because the movements are not controlled and they are without accuracy, so the fine locomotricity is lost, like play the guitar.
Also the posture is lost because the cerebellum also is the responsible to connect the sensitivity cells and the motor cells.