Why do we sleep? Although science has yet to explain the reason we spend one-third of our lives in this bizarre state, an exciting theory suggests that sleep can solidify newly learned memories by rewiring the architecture of brain.
Emerging neuroscience evidence also indicates that sleep can intelligently associate and integrate new memories together, performing a kind of "sleep-dependent alchemy." This phenomenon may fuel creative human insights, often reflected in dream content.
In addition to memory benefits, recent findings also suggest that sleep can "refresh" emotional brain reactivity, smoothing away the rough edges from our prior waking concerns, thereby allowing rational next-day decisions.
Thinking about skimping on your Zs? You'd better tune in to hear what UC Berkeley's Matt Walker has to say about it first!
Bio
Matt Walker
Matt Walker is a Professor of Psychology & Neuroscience at the University of California Berkeley.
Natural periodic suspension of consciousness during which the powers of the body are restored. Humans normally sleep at night, whereas nocturnal species sleep during the day. The average human sleep requirement is about 7.5 hours. Sleep is divided into two main types, REM (rapid-eye-movement) and NREM (non-REM); each recurs cyclically several times during a normal period of sleep. REM sleep is characterized by increased neuronal activity of the forebrain and midbrain, by depressed muscle tone, and by dreaming (seedream), rapid eye movements, and vascular congestion of the sex organs. NREM sleep is divided into four stages, the last of which is the deep, restorative, quiet sleep commonly associated with a good night's rest. See alsoinsomnia, narcolepsy.
That might be sensible if the work of REM sleep was to only develop associations for negative events. There's no indication that I'm aware of that this is the case.
What do you think of the claim by the philosopher J.Krishnamurti that if you eliminate conflict during the day then you don't dream but just experience a blissful sleep state. I've experienced some effects myself of reducing conflict following his advice. I haven't eliminated dreams but they seem to occur less. And sleep is more energizing.
Krishnamurti's reduction of conflict includes eliminating thought patterns like values and principles that csuse conflict as well as trying to life without conflict with others.