Arousal refers to the level of physiological and psychological activation in an individual. It determines how awake, energized, or stimulated someone feels.
Attention is the cognitive process of selectively focusing on specific information while ignoring irrelevant distractions. It helps us concentrate on important tasks or stimuli.
Vigilance: Vigilance is a sustained attentional state that involves maintaining alertness over an extended period, often during monotonous or repetitive activities like watching for signs of danger while driving long distances.