Sleep (system call)

About: Sleep (system call) is a research topic. Over the lifetime, 2633 publications have been published within this topic receiving 27806 citations. The topic is also known as: Sleep() & sleep().

Ecological and social pressures interfere with homeostatic sleep regulation in the wild

Abstract: Sleep is fundamental to the health and fitness of all animals. The physiological importance of sleep is underscored by the central role of homeostasis in determining sleep investment – following periods of sleep deprivation, individuals experience longer and more intense sleep bouts. Yet, most sleep research has been conducted in highly controlled settings, removed from evolutionarily relevant contexts that may hinder the maintenance of sleep homeostasis. Using triaxial accelerometry and GPS to track the sleep patterns of a group of wild baboons ( Papio anubis ), we found that ecological and social pressures indeed interfere with homeostatic sleep regulation. Baboons sacrificed time spent sleeping when in less familiar locations and when sleeping in proximity to more group-mates, regardless of how long they had slept the prior night or how much they had physically exerted themselves the preceding day. Further, they did not appear to compensate for lost sleep via more intense sleep bouts. We found that the collective dynamics characteristic of social animal groups persist into the sleep period, as baboons exhibited synchronized patterns of waking throughout the night, particularly with nearby group-mates. Thus, for animals whose fitness depends critically on avoiding predation and developing social relationships, maintaining sleep homeostasis may be only secondary to remaining vigilant when sleeping in risky habitats and interacting with group-mates during the night. Our results highlight the importance of studying sleep in ecologically relevant contexts, where the adaptive function of sleep patterns directly reflects the complex trade-offs that have guided its evolution.

Identifying and characterizing nocturnal motion and stages of sleep

Abstract: Disclosed herein are systems, methods and a computer readable storage medium that determine an individual's movement during sleep. In some embodiments, the identification is based on data from a motion sensor included in wearable device. In some embodiments, the individual wears the wearable device on his wrist during the individual's resting and/or sleep activities. In some embodiments, the system, methods and the computer readable storage medium automatically identify the various (stages) types of sleep during an individual's sleep periods that include periods of REM sleep, deep sleep, and light sleep and that are indicative of the individual's overall well-being and health.

Sleep in Studio Based Courses: Outcomes for Creativity Task Performance

Abstract: Good sleep quality is important to cognition, physical health, mental well-being, and creativity—factors critical to academic and professional success. But, undergraduate students often report engaging in short, irregular, and poor-quality sleep. Anecdotal and questionnaire data suggest that poor sleep habits might be prevalent in students who are in studio- or project-based majors that implicitly encourage consecutive nights of disrupted sleep to complete projects. We investigated sleep quantity and quality using both objective measures (wristband actigraphy monitoring) and subjective measures (sleep diary) in 28 interior design undergraduate students for a 7-day period. Our primary aim was to measure sleep quantity (total sleep time) and quality (e.g., nighttime awakenings) and to compare whether undergraduate interior design students' objective measures of sleep (actigraphy) differed from their subjective measures (sleep diary). The secondary aim was to investigate detrimental outcomes of poor sleep habits on laboratory-based measures of cognitive function (symmetry span, prospective memory, Raven's progressive matrices, remote associates task) that were administered pre- and poststudy. We found that the interior design students in our study overestimated their total sleep time by 36 minutes, that 79% of students slept for fewer than 7 hours at least three nights per week, and that many students cycled between nights of restricted/short sleep and recovery/long sleep. Importantly, students who maintained short sleep durations, highly variable night-to-night sleep durations, or had fragmented sleep (i.e., waking after sleep onset) demonstrated pre- to poststudy declines on the laboratory measure of creativity (remote associates task). These findings suggest the need for further investigations, which may lead to a broader discussion of studio culture and the role of the “all-nighter,” both in professional practice and in design education.

Power supply status automatic test method for computer apparatus

Abstract: The automatic power source state measuring method for computer aims at solving the problem that the power source state of computer is limited by the hardware configuration. The automatic power source state measuring method includes for the operator to select the power source state testing items and numbers vian an operation menu, for the computer to execute the selected test functions in the power source test state, and for the computer to re-execute the selected test items after the preset time the timer in the keyboard controller counts. The present invention may be used in testing the stand-by, sleep, shutting, reboot and other functions of computer.

Sleep monitoring and controlling method and system

Abstract: The invention discloses a sleep monitoring and controlling method and system. The method comprises the steps of starting the sleep monitoring and controlling system after a user goes to bed, setting a time domain for getting up, monitoring the sleep information of the user through a pressure sensor, judging the sleep state of the user through a processor, adjusting room temperature when the user falls asleep, recording the time to fall asleep, the duration of light sleep and the duration of deep sleep, and waking the user up in the light sleep period when it is time to get up. According to the sleep monitoring and controlling method and system, room temperature is adjusted when the user falls asleep so as to shorten the time to fall asleep, the sleep state of the human body is analyzed, the user is waken up in the light sleep period when it is time to get up, so that no harm is done to the body, and physical and psychological health is guaranteed.