wakefulness -
a periodic state during which you are conscious and aware of the world; "consciousness during wakefulness in a sane person is pretty well ordered and familiar"
waking the state of remaining awake; "days of danger and nights of waking"
arousal the act of arousing; "the purpose of art is the arousal of emotions"
wakefulness -
a temporary state in which you are unable (or unwilling) to sleep; "accept your wakefulness and sleep in its own contrary way is more likely to come"
wakefulness -
the process of paying close and continuous attention; "wakefulness, watchfulness, and bellicosity make a good hunter"; "vigilance is especially susceptible to fatigue"
Wakefulness is a daily recurring brain state in which an individual is conscious and engages in coherent cognitive and behavior responses to the external world such as communication, ambulation, nutritional ingestion and procreation. Being awake is the opposite of being asleep in which most external inputs to the brain are excluded from neural processing.
