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Polyphasic sleep

Historical and Cultural Practices of Polyphasic Sleep: – Siesta as a classic cultural example of biphasic sleep – Segmented sleep in preindustrial West – Benjamin […]

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Historical and Cultural Practices of Polyphasic Sleep:
– Siesta as a classic cultural example of biphasic sleep
– Segmented sleep in preindustrial West
– Benjamin Franklin and Buckminster Fuller’s practices
– Importance of biphasic sleeping for children’s health
– Various cultural traditions embracing polyphasic sleep

Physiological Aspects and Sleep Disorders:
– Circadian rhythm’s role in regulating sleep-wake cycles
– Irregular sleep-wake syndrome as a polyphasic sleep disorder
– Examples of polyphasic sleep in infants and animals
– Prolactin levels in the brain during nighttime wakefulness
– Elderly individuals’ disrupted sleep patterns leading to polyphasic sleep

Polyphasic Sleep in Extreme Situations and Studies:
– Systematic napping in crises
– Claudio Stampi’s research on short naps for optimal performance
– U.S. military, Canadian Marine pilots, and NASA recommendations on napping
– Techniques of long-distance solo sailors for maximizing wake time
– Benefits and caution against ultrashort napping as a lifestyle

Modern Interpretations and Recommendations on Polyphasic Sleep:
– Online community experiments with polyphasic sleep
– Siesta as a traditional daytime sleep in various countries
– Lack of scientific evidence supporting polyphasic sleep for productivity
– Various institutions’ research highlighting benefits of napping for cognitive functions
– Recommendations from different sectors on nap durations and schedules

Impact of Sleep on Performance and Sleep Research Studies:
– Stimulants used to counteract fatigue in aviators
– Fatigue management in marine pilots and elderly individuals
– Rich Wilson’s sleep patterns during the Transat Race for performance analysis
– Stampi’s research on evolution and functions of polyphasic sleep
– Studies on sleep disturbances in the elderly and NASA-supported research on naps

Polyphasic sleep (Wikipedia)

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. Segmented sleep and divided sleep may refer to polyphasic or biphasic sleep, but may also refer to interrupted sleep, where the sleep has one or several shorter periods of wakefulness, as was the norm for night sleep in pre-industrial societies.

A common form of biphasic or polyphasic sleep includes a nap, which is a short period of sleep, typically taken between the hours of 9 am and 9 pm as an adjunct to the usual nocturnal sleep period. Napping behaviour during daytime hours is the simplest form of polyphasic sleep, especially when the naps are taken on a daily basis.

The term polyphasic sleep was first used in the early 20th century by psychologist J. S. Szymanski, who observed daily fluctuations in activity patterns. It does not imply any particular sleep schedule. The circadian rhythm disorder known as irregular sleep-wake syndrome is an example of polyphasic sleep in humans. Polyphasic sleep is common in many animals, and is believed to be the ancestral sleep state for mammals, although simians are monophasic.

The term polyphasic sleep is also used by an online community that experiments with alternative sleeping schedules in an attempt to increase productivity. There is no scientific evidence that this practice is effective or beneficial.

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