Dreams
Why can’t we remember our dreams?
We usually only remember the fact that we have had intense dreams when we wake. Only nightmares, or dreams of a particularly emotional nature, stick in our memories.
Why are some dreams coloured?
Scientific REM studies have proven that we tend to dream in colours but we do not always recall them. ... In our waking state, colours stimulate emotions. Similarly, colours also stimulate emotions in dreams. Scientific REM studies have proven that we tend to dream in colours but we do not always recall them.
Why do we have nightmares?
There can be a number of psychological triggers that cause nightmares in adults. For example, anxiety and depression can cause adult nightmares. Post-traumatic stress disorder (PTSD) also commonly causes people to experience chronic, recurrent nightmares. Nightmares in adults can be caused by certain sleep disorders.
How are dreams made?
Dreams mainly occur in the rapid-eye-movement (REM) stage of sleep—when brain activity is high and resembles that of being awake. REM sleep is revealed by continuous movements of the eyes during sleep. At times, dreams may occur during other stages of sleep.