Final answer:
The process of initiating, directing, and grading movement is primarily controlled by the basal ganglia in the brain. These interconnected brain areas play important roles in movement control and posture. They also regulate motivation.
Step-by-step explanation:
The process of initiating, directing, and grading movement is primarily controlled by the basal ganglia in the brain. These interconnected brain areas play important roles in movement control and posture. They also regulate motivation.
For example, when you drive a car and anticipate a traffic light changing, neurons in the basal ganglia areas prepare your body for the movements necessary to drive the car.
Overall, the basal ganglia manage sequential movements based on prior experience, and they are most active leading up to the initiation of movement.