And what they found was that just 20 percent of the cerebellum was dedicated to areas involved in physical motion, while 80 percent was dedicated to areas involved in functions such as abstract thinking, planning, emotion, memory and language.

…The cerebellum doesn’t directly carry out tasks like thinking, just as it doesn’t directly control movement, Marek says. Instead, he says, it appears to monitor the brain areas that are doing the work and make them perform better.

In essence, this structure appears to act as a kind of editor, constantly reviewing and improving a person’s thoughts and decisions, Dosenbach says. 

Cerebellum Plays Bigger Role In Human Thought Than Previously Suspected : Shots – Health News : NPR

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