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Patients have a relatively severe to absolute inability to advance the sleep phase to earlier hours by enforcing conventional sleep and wake times. Sleep–wake logs and/or actigraphy monitoring for at least two weeks document a consistent habitual pattern of sleep onsets, usually later than 2 am, and lengthy sleeps.
These individuals have advanced sleep–wake times, so they tend to go to bed and wake up much earlier as compared to normal individuals. ASPD is less common than DSPD, and is most prevalent within older populations. [13] Familial Advanced Sleep Phase Syndrome (FASPS) is linked to an autosomal dominant mode of inheritance.
The subjects demonstrated a phase advance of sleep-wake rhythms that was distinct not only from control subjects, but also to sleep-wake schedules widely considered to be conventional. The subjects were also evaluated using the Horne-Östberg questionnaire , a structured self-assessment questionnaire used to determine morningness-eveningness in ...
Sleep mode (or suspend to RAM) is a low power mode for electronic devices such as computers, televisions, and remote controlled devices. These modes save significantly on electrical consumption compared to leaving a device fully on and, upon resume, allow the user to avoid having to reissue instructions or to wait for a machine to boot .
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]
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Sensor nodes have the ability to switch to a standby mode in which all components are switched off except for the clock. In this "sleep phase", their energy consumption is minimal, but they are inactive and in particular cannot receive any messages. S-MAC gives the sensor nodes a fixed "daily routine" with regular wake and sleep cycles.
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