Abstract
Sleep is a distinctive and essential component of human behavior. The Rechtschaffen and Kales (1) system for scoring sleep stages distinguishes a waking state, non-rapid-eye movement (NREM) sleep and rapid-eye movement (REM) sleep. During NREM sleep four stages are conventionally distinguished.
License
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Article Type: Review Article
EUR J GEN MED, Volume 1, Issue 1, January 2004, 2-3
https://doi.org/10.29333/ejgm/82161
Publication date: 15 Jan 2004
Article Views: 1154
Article Downloads: 755
Open Access References How to cite this article