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2007-11-01 17:51:29 · 5 answers · asked by rath 5 in Science & Mathematics Biology

5 answers

If you are trying to have a dream that you can remember, then go back to sleep for 10-15 minutes after you wake up in the morning. If you need to, then set the alarm early so you have time to do that. My experience is that I have very vivid dreams under those circumstances.

2007-11-01 17:56:45 · answer #1 · answered by ecolink 7 · 0 0

haha ecolinks answer is interesting, bc everytime i sleep in is not because im all that tired, but because everytime i go back to sleep i have dreams that im sure are not all that more interesting then the ones i have when im really tired, but when ive had enough sleep and go back to sleep again i wake up shortly and remember the dreams i was having much better

2007-11-02 01:09:40 · answer #2 · answered by Anonymous · 0 0

i dont know exactly, but it happens mostly during REM sleep. here is what i found;

In mammals, the measurement of eye movement during sleep is used to divide sleep into two broad types: rapid eye movement (REM) and non-rapid eye movement (NREM) sleep. Each type has a distinct set of associated physiological, neurological and psychological features.

Sleep proceeds in cycles of REM and NREM phases. In humans, this cycle is approximately 90 to 120 minutes.[citation needed] Each phase may have a distinct physiological function. Drugs such as alcohol and sleeping pills can suppress certain stages of sleep (see Sleep deprivation). This can result in a sleep that exhibits loss of consciousness but does not fulfil its physiological functions.

In REM, the brain is active and the body inactive, and this is when most dreaming occurs. REM sleep is characterized by an electroencephalography (EEG) that has low voltage and mixed frequency, similar in appearance to the wakeful EEG. During REM sleep there is loss of skeletal muscle tone, and an active sympathetic nervous system. Also during REM sleep our muscles are paralyzed so that we dont act out our dreams.

In NREM sleep, the body is active and the brain is inactive, and there is relatively little dreaming. Non-REM encompasses four stages; stages 1 and 2 are considered 'light sleep', and 3 and 4 'deep sleep'. They are differentiated slence, or "drowsy sleep". Associated with the onset of sleep during N1 may be sudden twitches and hypnic jerks. These are normal, as is an increased instance of flatulence[citation needed]. Other people may also experience hypnagogic hallucinations during this stage, which can be more troublesome to the subject. During N1 the subject loses some muscle tone, and conscious awareness of the external environment.

Stage N2, is characterized by "sleep spindles" (12 to 16 Hz) and "K-complexes." During this stage the electromyography (EMG) lowers, and conscious awareness of the external environment disappears. This occupies 45 to 55% of total sleep.
In Stage N3, the delta waves, also called delta rhythms (0.5 to 4 Hz) make up less than 50% of the total wave-patterns. This is considered part of the slow-wave sleep (SWS) and functions primarily as a transition into stage N4. Overall it occupies 3 to 8% of total sleep time. This is the stage in which night terrors, bed wetting, sleepwalking, and sleep-talking occur.
In Stage N4, delta-waves make up more than 50% of the wave-patterns. Stages N3 and N4 are the deepest forms of sleep; N4 is effectively a deeper version of N3, in which the deep-sleep characteristic, such as delta-waves, are more pronounced.[1]

[edit] REM
For more details on this topic, see Rapid eye movement sleep.
REM sleep (Stage R, or Stage 5) is popularly associated with dreaming, especially bizarre, visual, and seemingly random dreams; however, dreams can also occur during sleep onset (hypnagogia) and during all other stages of sleep.[2]

The suprachiasmatic nucleus (SCN) of the hypothalamus plays an important role and also generates its own rhythm in isolation. In the presence of light it sends messages to the pineal gland that instruct it to cease secreting melatonin

2007-11-02 01:00:52 · answer #3 · answered by Anonymous · 0 1

just close your eyes and yo! start dreaming ! once again do not read such a heavy jargon of REM.just delet it from your computer.

2007-11-02 04:15:58 · answer #4 · answered by Anonymous · 0 0

think of some thing before you get sleep
and u will have a dream

2007-11-02 01:00:24 · answer #5 · answered by shyam s 2 · 0 0

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