1. Consciousness
- brain waves become irregular - the heart rate begins to slow, and muscles relax - easy to awaken and may not realize that he or she has been asleep o stage 2 Deeper stage - peaks of brain waves become higher and higher (sleep spindles) - k-complexes (peaks suddenly drastically descend and then pick back up) follow o stage 3 Deeper sleep - also called delta sleep or deep sleep - very slow brain waves, called delta waves (lower frequency than theta waves) 20 to 50% of brain waves are delta waves; the rest are theta waves o stage 4 Delta sleep - again, also called delta sleep...
- Word Count: 3290
- Approx Pages: 13