Q: Is sleep a naturally recurring state of mind characterized by altered consciousness? ¶
A: Yes, and relatively inhibited sensory activity, inhibition of nearly all voluntary muscles, and reduced interactions with surroundings.
Q: Is sleep to study the deprivation of it? ¶
Q: Was sleep discovered as distinct, and thus William C? ¶
A: Yes, Dement and Nathaniel Kleitman reclassified sleep into four NREM stages and REM.
Q: Is sleep turned on by acetylcholine secretion and is inhibited by neurons that secrete monoamines including serotonin? ¶
Q: Was sleep divided into four stages, with slow-wave sleep comprising stages 3 and 4? ¶
A: Yes, In stage 3, delta waves made up less than 50% of the total wave patterns, while they made up more than 50% in stage 4. Furthermore, REM sleep was sometimes referred to as stage 5. In 2004, the AASM commissioned the AASM Visual Scoring Task Force to review the R&K scoring system.
Q: Is sleep related to memory? ¶
Q: Is sleep an evolutionary transformation of a well-known defensive mechanism? ¶
A: Yes, and the tonic immobility reflex.
Q: Is sleep commonly believed to indicate dreams with sexual content? ¶
A: Yes, and they are not more frequent during sexual dreams than they are during nonsexual dreams.
Q: Is sleep thought to be the most restful form of sleep? ¶
A: Yes, and the phase which most relieves subjective feelings of sleepiness and restores the body.
Q: Is sleep first described in 1937 by Alfred Lee Loomis and his coworkers? ¶
A: Yes, and who separated the different electroencephalography features of sleep into five levels , representing the spectrum from wakefulness to deep sleep.
Q: Is sleep sometimes thought to help conserve energy, though this theory is not fully adequate as it only decreases metabolism by about 5–10%? ¶
A: Yes, Additionally it is observed that mammals require sleep even during the hypometabolic state of hibernation, in which circumstance it is actually a net loss of energy as the animal returns from hypothermia to euthermia in order to sleep.
Q: Is sleep commonly called sleep deprivation? ¶
Q: Is sleep uncertain but a lack of it impairs the ability to learn complex tasks? ¶
Q: Is sleep considered to be adequate when there is no daytime sleepiness or dysfunction? ¶
Q: Is sleep normally accompanied by partial to full penile erection? ¶
A: Yes, while only about 12% of men's dreams contain sexual content.
Q: Is sleep associated with dreaming? ¶
A: Yes, and desynchronized and faster brain waves, loss of muscle tone, and suspension of homeostasis.
Q: Is sleep so different that physiologists classify them as distinct behavioral states? ¶
Q: Is sleep sometimes confused with unconsciousness? ¶
A: Yes, but is quite different in terms of thought process.
Q: Is sleep not typically used? ¶
A: Yes, although animal non-REM sleep can be described as lighter or deeper.
Q: Is sleep divided into two broad types: rapid eye movement and non-rapid eye movement? ¶
A: Yes, Each type has a distinct set of physiological and neurological features associated with it.
Q: Is sleep not a meaningful concept unless the timing of that sleep is seen in relation to an individual's circadian rhythms? ¶
Q: Is sleep quickly reversible? ¶
A: Yes, as opposed to hibernation or coma, and sleep deprivation is followed by longer or deeper rebound sleep.
Q: Is sleep not simply a passive consequence of removing the animal from the environment, but is a "drive"? ¶
A: Yes, animals alter their behaviors in order to obtain sleep.
Q: Is sleep anabolic? ¶
A: Yes, anabolic hormones such as growth hormones are secreted preferentially during sleep.
Q: Is sleep the subject of substantial ongoing research? ¶