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Polyphasic sleep is the practice of sleeping during multiple periods over the course of 24 hours, in contrast to monophasic sleep, which is one period of sleep within 24 hours. Biphasic (or diphasic, bifurcated, or bimodal) sleep refers to two periods, while polyphasic usually means more than two. [1] Segmented sleep and divided sleep may refer ...
Chronic partial sleep deprivation is a form of sleep deprivation caused when one obtains some but inadequate sleep. Acute sleep deprivation is more widely known as the scenario in which one is awake for 24 hours or longer. [8] From student reports, 70.65% of students are sleep deprived and 50% of college students exhibit daytime sleepiness.
Matthew Walker is a British author, scientist and professor of neuroscience and psychology at the University of California, Berkeley. [1][3][4][5] As an academic, Walker has focused on the impact of sleep on human health. He has contributed to many scientific research studies. [1] Why We Sleep (2017) is his first work of popular science.
Dayparting. Approximate U.S. television broadcast dayparts for weekdays (Eastern Time Zone). In broadcast programming, dayparting is the practice of dividing the broadcast day into several parts, in which a different type of radio programming or television show appropriate for that time period is aired. Television programs are most often geared ...
The health consequences of shift work may depend on chronotype, that is, being a day person or a night person, and what shift a worker is assigned to. When individual chronotype is opposite of shift timing (day person working night shift), there is a greater risk of circadian rhythms disruption. [24]
Adolescent sleep. Adolescent sleep is typically poor in duration and quality. Sleep duration and quality reduce to suboptimal levels, and sleep duration variability and latency increases during adolescence. [1] Sleep recommendations suggest that adolescents should obtain 8–10 hours of sleep per night. Additionally, there is a shift in the ...
Shift work sleep disorder (SWSD) is a circadian rhythm sleep disorder characterized by insomnia, excessive sleepiness, or both affecting people whose work hours overlap with the typical sleep period. Insomnia can be the difficulty to fall asleep or to wake up before the individual has slept enough. [1] About 20% of the working population ...
v. t. e. A curfew is an order that imposes certain regulations during specified hours. [1] Typically, curfews order all people affected by them to remain indoors during the evening and nighttime hours. [2][3] Such an order is most often issued by public authorities, but may also be given by the owner of a house to those living in the household.