Sleep consists of two distinct states: REM (rapid eye movement) sleep and NREM (non-REM) sleep. Dreaming occurs mostly in REM sleep.
Sleep is a cyclic phenomenon, with four or five REM periods during the night, which accounts for about 25 percent of the total night’s sleep.
Examples Of Sleep...
Recently, research by a team at the University of California, Berkeley, uncovered a link between sleep deprivation and psychiatric... Read more »
Do you have problems falling asleep? Do you wake frequently during the night? Do you feel fatigued or sleepy... Read more »
According to the National Institute of Neurological Disorders and Stroke, over 40 million Americans suffer from a chronic sleep disorder. ... Read more »
There are two main types of eating disorders: anorexia nervosa and bulimia. Some experts have suggested a third type should be binge... Read more »
There are many different types of anxiety disorders and each one produces unique symptoms. In addition, each person may experience... Read more »
Source: ADAM Encyclopedia
Relieving chronic pain and controlling medical conditions such as frequent urination may improve sleep in some people. Treating depression can also... Read more »
Source: Harvard Decision Guide
What Is It? In generalized anxiety disorder, a person has persistent, nagging feelings of worry or anxiety. These feelings are either unusually... Read more »
Source: Harvard Decision Guide
What Is It? Panic disorder is a type of anxiety disorder. A person with panic disorder has panic attacks, which are repeated, unexpected episodes of... Read more »
About 72 percent of all Americans experience insomnia, but five specific sleeping disorders can make sufferers fearful of falling asleep. Sleep... Read more »
Source: Harvard Decision Guide
What Is It? Sleep apnea is a disorder that causes people to stop breathing for short periods during sleep. These periods are called apneas. They... Read more »