| Sleep and wakefulness patterns are clearly disrupted when individuals spend their days in complete idleness. |
| Increases in fatigue associated with periods of prolonged wakefulness have been well documented. |
| Sleepwalking is a form of parasomnia, a class of sleep disorders characterized by partial wakefulness. |
| Infant colic is characterized by excessive and inconsolable crying, hypertonicity, and wakefulness, mainly in the evening. |
| Melatonin had no effect on sleep quality, wakefulness, total sleep time, or percentage of time spent in REM sleep. |
| He flung an arm across his face to shield off wakefulness, hoping to sink back into sweet oblivion. |
