By Sharmain Cornette. âAbout two percent of the patients who undergo open-heart surgery worldwide end up with a stroke.â This notion was amplified yesterday by Chief Executive Officer of the Caribbean Heart Institute (CHI), Dr Gary Stephens, during an interview with this newspaper.
Dreams mainly occur in the rapid-eye movement (REM) stage of sleepâwhen 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. However, these dreams tend to be much less vivid or memorable. The length of a dream can vary; they may last for a few seconds, or approximately 20â30 minutes.
Dreams at the end of the night may last as long as 15 minutes, although these may be experienced as several distinct episodes due to momentary arousals interrupting sleep as the night ends. Dream reports can be reported from normal subjects 50% of the time when they are awakened prior to the end of the first REM period.