![]() ![]() Two kinds of movements escape the dreaming brain, and they each have a different story to tell. Events in the outside world usually get ignored: not that I’d recommend doing this but experiments have shown that even if you sleep with your eyes taped open and someone flashes a light at you it is unlikely that it will affect your dreams.īut the door between the dreamer and the outside world is not completely closed. ![]() ![]() Even during the most vivid dreams our muscles stay relaxed and still, showing little sign of our internal excitement. Normally we are paralysed while we sleep. Nobody knows for sure what causes them, but to me they represent the side effects of a hidden battle for control in the brain that happens each night on the cusp between wakefulness and dreams. Me, I am fascinated by these twitches, known as hypnic jerks. Some people are startled by them, others are embarrassed. As we give up our bodies to sleep, sudden twitches escape our brains, causing our arms and legs to jerk. ![]()
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