OSCAR BURRIEL / SCIENCE PHOTO LIBRARY OSCAR BURRIEL / SCIENCE PHOTO LIBRARY
Sleepwalking. Abstract image of a young woman with arms outstretched sleepwalking above a city. She appears to be "walking a plank". Sleepwalking (somnambulism) occurs during NREM (nonrapid eye movement) sleep or when aroused from this type of sleep. It is not a process of acting out dreams, and may be a regular tendency in some people. Sleepwalking may arise from night terror, which may involve loud or sudden behaviour, or the sleepwalker may talk in simple phrases. It may be worsened by anxiety, or may be associated with use of sleeping pills in the elderly. The sleepwalker should be gently steered back to bed, avoiding injury, especially if waking is difficult.
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