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Dreams and REM sleep
The most vivid dreams occur during REM sleep. These dreams are often elaborate and emotional experiences that include sadness, anger, apprehension or fear. A person can more readily recall a dream when they awake from REM sleep. However, the purpose of dream content is not currently understood.
Sigmund Freud suggested dreams were a representation of unconscious thought. Another hypothesis proposes that dreams are a random brain activity during REM sleep and not a meaningful experience.
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Benefits of REM sleep
Non-REM sleep is necessary in order to survive. Mild sleep deprivation increases the risk of chronic health conditions and severe sleep deprivation can lead to hallucinations or death.
However, the benefits of REM sleep remain inconclusive. Studies show no obvious adverse effects wh...
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REM definition
Before REM sleep, the three prior stages of sleep occur progressively slow bodily function and brain activity. These stages are known as non-REM or N1, N2, and N3.
However, during REM sleep, the eyes move rapidly sideways. The heart rate, respiratory rate and blood pressure increase to thei...
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REM and your brain
During REM sleep, brain wave activity increase, as measured on an electroencephalogram (EEG).
- N1 sleep shows slowing of the normal alpha wave pattern noted during the awake state.
- N2 sleep introduces K waves - long, high voltage waves - lasting...
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Rapid eye movement (REM sleep)
REM is an active and final phase of the four-stage sleep cycle characterised by increased brain activity and autonomic nervous system functions. The brainstem and hypothalamus mostly control this stage of sleep.
Many theories hypothesise that REM sleep is helpful for learning and memory for...
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Neurological origins of sleep paralysis
Sleep paralysis often occurs when we take a nap, when jet-lagged or sleep-deprived. We wake up while still in the stage where vivid dreams occur, called the rapid eye movement sleep (REM).
During REM, the front brain - central to our ability to plan and think logically...
Our Experience Of Time During Dreams
Dreams occur in the Rapid Eye Movement (REM) stage of sleep. We tend to remember the dreams that are seen just prior to waking up, but often the experience of time during our dream and awake stages is skewed.
Swedish and German scientists studied Lucid Dreamers(People who are aware wh...
NREM And REM Sleep
- NREM Sleep- Non-Rapid Eye Movement Sleep. It is the type of sleep when you don’t dream. It is what most people associate with sleep. It is a very relaxed type of sleep that gets progressively deeper through three stages called N1, N2, and N3.
- REM Sleep- Rapid...
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