The modulatory systems, however, act on multiple neuronal circuits and brain areas. This diffuse action is related to the overall moods and states of the brain (for example, attentiveness, sleep, and anxiety).
但是，调节系统在众多神经元回路和大脑区域上行动。这一扩散动作与总体情绪和大脑状态（比如专注度、睡眠和焦虑）有关。