Final answer:
Beta adrenergic blocking agents and anticholinergic drugs are used to treat performance anxiety by reducing the physical symptoms of anxiety.
Step-by-step explanation:
Beta adrenergic blocking agents and anticholinergic drugs are used to treat performance anxiety. Beta adrenergic blocking agents, also known as beta blockers, block the beta receptors associated with vasoconstriction and cardioacceleration. By blocking these receptors, they can reduce symptoms of anxiety such as a fast heart rate, trembling, and sweating. Anticholinergic drugs, on the other hand, interrupt or reduce the function of the parasympathetic system, which is responsible for rest and digestion. As a result, they can help alleviate anxiety symptoms by blocking the effects of excess acetylcholine.