wakefulness

(n) 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
(n) 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
sleeplessness,
(n) the process of paying close and continuous attention
- wakefulness, watchfulness, and bellicosity make a good hunter
- vigilance is especially susceptible to fatigue
alertness, vigilance, watchfulness,

sleeplessness alertness vigilance watchfulness

drowsiness sleepiness somnolence