Page 182 - The Truth Landscape Format 2020 with next section introductions-compressed

The Premotor area

The premotor area is where muscle action is learned, through practice.

This is the key area for learning actions, such as learning to fly, catch mice, dance, swing a tennis racket, play a piano, or shuffle cards. When a behaviour is
thoroughly learned, it becomes a habit. Interestingly, some muscle action can be practiced mentally.

If this area is strong, then people learn complex actions quickly, such as a new dance step. If it is weak, then people learn slowly, and need to practice a lot.

The Motor area

The motor area is like a puppet master controlling individual muscles by pulling strings (the premotor area is the puppet master, and the creative area writes
the script).

1. Creative area ----- "I want to hit the ball in the right boundary"
2. Inhibition area -----"I better not miss the ball"
3. Premotor area ---- Remembers how to swing a bat through practice
4. Motor area ------- Sends impulses down to the arm muscles
5. Cerebellum ------- Makes muscle movements smooth and graceful

A person with many neurons devoted to this will tend to have more precise control of individual muscles, which is useful in craft work and playing musical
instruments.

The nerves cross going to the brain, so the right motor area controls the left side of the body, such as the left hand. Left-handed people operate from the right
side of the brain.
Injuries or strokes on the right side of the brain make the left side of the body paralyzed.

The Cerebellum

The cerebellum at the back of the neck coordinates muscle motion. The motor area sends a command to reach for a glass of water. If the cerebellum is well
developed, then it intercepts the muscle signals and modifies them so that the hand slowly accelerates smoothly to start with, then slows down smoothly as it
gets near the glass. If the cerebellum is weak, then the arm may shoot out awkwardly and knock the glass over.

Page182