Characteristics of Vertex Wave during Light Sleep according to Age

Abstract

The significance of sleep disorders is underestimated in our society. The number of sleep disorders is over 80 in recent classifications of sleep disorders. And the incidence and prevalence of sleep disorders are very high compared to other medical illnesses. The consequences of sleep disorders such as medical illness, surgical illness, and accident may cause serious burden not only to our individual health but also to our society both medically and socioeconomically. By reviewing economical cost of sleep disorders, we can see the seriousness of this condition and can find out what to do for the improvement to better condition.