1. Sleep Deprivation And It's Effects On Teenagers
... emotional and physical symptoms of sleep loss (Dahl, R). Most scientists and researchers say that there are 4 phases of sleep. Some would call wakefulness stage zero. In stage one, the person is somewhat conscious. In tests, when subjects were told to indicate faint tones that were played during ... they successfully indicated about half of the tones. Phase 2 is described as being the first phase of actual sleep. When the same test was done on subjects in phase 2, no response was given. Phase 3 and phase 4 are the deepest phases of sleep. Phase 3 is moderate, and phase ... of time. Also,...
- Word Count: 1657
- Approx Pages: 7
- Grade Level: High School