NUR 163 Notes Week 8 Sleep

NUR163, Week 8 What is Sleep?  It is a natural process that is necessary for optimal health  It involves a shift in physiological and neurological activity  It is intended to be a restorative process Normal Physiological Process  Under normal circumstances it occurs in stages, in a fairly consistent pattern Two major Categories  Non-Rapid Eye movement  Rapid Eye Movement Non-Rapid Eye Movement has Four Stages Stage 1 –  Light sleep, person can be awakened easily  Can drift in and out of sleep hallucinations can occur  Uncontrolled muscle jerks can occur Stage 2 –  Eye movement ceases  Brain waves become even slower  Pulse rate and respirations slow down and body temperature drops. Stage 3 –  Deep sleep characterized by very slow brain waves called Delta Waves  Delta Waves are smaller and faster waves Stage 4 –  Exclusively Delta Waves