Final answer:
The basal ganglia are involved in movement control and posture, not sensory stimulation. They regulate motor activity and motivation. Damage to the basal ganglia can lead to motor impairments and decreased motivation.
Step-by-step explanation:
The basal ganglia, also known as the basal nuclei, are interconnected brain areas that play important roles in movement control and posture. They are not directly involved in sensory stimulation, but rather in regulating motor activity and motivation. In cases of basal ganglia damage, such as in Parkinson's disease, motor impairments can occur, including a shuffling gait when walking. Additionally, the basal ganglia can influence motivation. For example, individuals with basal ganglia damage may exhibit decreased interest in activities and a lack of motivation, but may still be able to function normally when externally stimulated.