Epinephrine/adrenaline, acetylcholine, and dopamine work together to facilitate the ability to get focused, direct focus, and stay focused over time。肾上腺素(Epinephrine/adrenaline )能增加能量和警觉性(但不足以让你集中注意力),而乙酰胆碱( Acetylcholine )则能将注意力集中在某个特定的点上,最后多巴胺(Dopamine)则是能让注意力更加持久。