Final answer:
The side effect of haloperidol (Haldol) on motor control is known as extrapyramidal symptoms (EPS), which affects the basal ganglia in the nervous system and can cause tremors, stiffness, and abnormal muscle movements.
Step-by-step explanation:
The side effect of haloperidol (Haldol) that can affect motor control is known as extrapyramidal symptoms (EPS). EPS are movement disorders that can occur as a result of taking antipsychotic medications such as haloperidol. The focus of haloperidol's side effects on motor control is likely the basal ganglia region of the nervous system. The basal ganglia plays a role in regulating voluntary movements, and when affected by haloperidol, it can result in symptoms such as tremors, stiffness, and abnormal muscle movements.