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In a perfect world, most of us should take 10 to 20 minutes to fall asleep, with the average sleep latency (the time it takes to fall asleep) sitting at about 12 minutes. But alas, this world is ...
[36] [37] Individuals with less than 6 hours of sleep are the most likely to fall asleep at the wheel and with the average university students getting that amount of sleep, the dangers are a real factor for students. [38] [39] Once a student makes it to class, sleep deprivation will affect their ability to stay awake throughout the class. [38 ...
The word hypnagogia is sometimes used in a restricted sense to refer to the onset of sleep, and contrasted with hypnopompia, Frederic Myers's term for waking up. [2] However, hypnagogia is also regularly employed in a more general sense that covers both falling asleep and waking up.
A hypnic jerk, hypnagogic jerk, sleep start, sleep twitch, myoclonic jerk, or night start is a brief and sudden involuntary contraction of the muscles of the body which occurs when a person is beginning to fall asleep, often causing the person to jump and awaken suddenly for a moment.
Bedtime procrastination causes people to feel that time is passing quickly, which can lead to anxiety and stress. [21] For people who do not sleep well, bedtime is an abominable time. Sleep can become a task and a burden that increases people's worry about getting enough sleep, leading to nervousness, and increases their psychological stress.
Sleep deprivation increases this propensity, which can be measured by polysomnography (PSG) as a reduction in sleep latency (the time needed to fall asleep). [69] An indicator of sleep propensity can also be seen in the shortening of the transition from light stages of non-REM sleep to deeper slow-wave oscillations.
The electrical activity seen on an EEG represents brain waves. The amplitude of EEG waves at a particular frequency corresponds to various points in the sleep-wake cycle, such as being asleep, being awake, or falling asleep. [18] Alpha, beta, theta, gamma, and delta waves are all seen in the different stages of sleep.
Sleep has been directly linked to the grades of students. One in four U.S. high school students admit to falling asleep in class at least once a week. [21] Consequently, results have shown that those who sleep less do poorly.