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The cognitive shuffle is based on Beaudoin’s somnolent information processing theory. [5] [13] The somnolent information processing theory postulates the existence of a sleep onset control system that evolved to ensure that falling asleep tends to happen when it is evolutionarily opportune (safe, timely) to fall asleep. [14]
Sleep duration measures the length of sleep, whereas sleep quality includes factors such as speed in falling asleep and whether sleep is unbroken. [122] [123] Low quality sleep has been linked with health conditions like cardiovascular disease, obesity, and mental illness. While poor sleep is common among those with cardiovascular disease, some ...
Gail Jefferson (22 April 1938 – 21 February 2008) was an American sociologist with an emphasis in sociolinguistics.She was, along with Harvey Sacks and Emanuel Schegloff, one of the founders of the area of research known as conversation analysis (CA).
Employers have varying views of sleeping while on duty. Some companies have instituted policies to allow employees to take napping breaks during the workday in order to improve productivity [11] while others are strict when dealing with employees who sleep while on duty and use high-tech means, such as video surveillance, to catch their employees who may be sleeping on the job.
The Hall data analysis showed that sexual dreams occur no more than 10% of the time and are more prevalent in young to mid-teens. [21] Another study showed that 8% of both men's and women's dreams have sexual content. [24] In some cases, sexual dreams may result in orgasms or nocturnal emissions. These are colloquially known as "wet dreams". [25]
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.
Difficulty falling asleep, including difficulty finding a comfortable sleeping position; Waking during the night, being unable to return to sleep [21] and waking up early; Not able to focus on daily tasks, difficulty in remembering; Daytime sleepiness, irritability, depression or anxiety; Feeling tired or having low energy during the day [22]
One of the important questions in sleep research is clearly defining the sleep state. This problem arises because sleep was traditionally defined as a state of consciousness and not as a physiological state, [14] [15] thus there was no clear definition of what minimum set of events constitute sleep and distinguish it from other states of partial or no consciousness.