Nature of Sleep and its Disorders
Team Creates Math Model for Circadian Rhythm
The internal clock in living beings that regulates sleeping and waking patterns—usually called the circadian clock—has often befuddled…
Awareness of sleep disorders
Sleep occupies approximately 8h of each 24-h cycle, but much less attention has been paid to the medical…
Costs of sleep disorders
There are several aspects of the costs of sleep disorders to society.
1 Development of other…
Sleep and space travel
It is common for there to be a prolonged episode of wakefulness before take-off on space travel. There…
Residential and nursing homes and institutions
Disrupted sleep at night is often the cause of elderly people requiring long-term residential and nursing home care,…
Location of sleep
Most people fall asleep more readily and sleep more soundly in familiar surroundings, except those with psychophysiological insomnia.…
Treatment of obesity - Obesity and sleep disorders
Behavioural treatments
These include cognitive behavioural therapy which aims to alter attitudes about comfort eating, and…
Obesity and sleep disorders
Obesity is related to the following sleep conditions.
Sleep deprivation and fragmentation
Sleep deprivation…
Sleep and the partner
Sleep disorders may affect the bed partner, family, friends, carers and even neighbours in addition to the patient.…
Sleep and obesity
The control of sleep is closely linked to feeding behaviour and energy expenditure. These determine the body weight…
Sleep hygiene
The quantity, quality and timing of sleep are affected by many everyday activities and attitudes (
Duration of sleep
Normal sleep
About 60% of the adult population obtain 7–8h sleep per night, with a mean…
NREM sleep - Mixed sleep–wake states
Intrusion of REM into NREM sleep does not cause any symptoms because sleep is maintained, but is very…
Mixed sleep–wake states
Mixed and transitional states are very variable, but can be categorized according to the state in which they…
Sleep and wakefulness
Sleep and wakefulness are not totally distinct states.
The constant flux in the activity of many…
Sleep in humans and other animals
A rest–activity pattern is detectable in almost all organisms and this may be related to the presence of…
Structure of sleep (sleep architecture)
External influences and some internal stimuli have less influence on the brain during sleep than during wakefulness. To…
Characteristics of sleep
Sleep is recognizable by its contrast to wakefulness.
It is a state of reduced awareness and…
Nature of Sleep and its Disorders
Sleep disorders still often remain unrecognized and untreated despite the rapid advances in the understanding of their nature…
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