... thought they were just dozing or thinking. Sleep spindles a brief burst of higher frequency brain wave occurs, means person is truly asleep. K complexes which are low frequency yet higher amplitude waves occur and are in response to arousing stimuli NREM Stage 3 Heart rate, blood pressure and body temp continue to drop and breathing rate continues to be slow and steady Theta ... and Delta waves (20%-50% are delta waves) Start of the deepest sleep period, generally within an hour of falling asleep It usually lasts for around 10mins Individuals become less responsive to the outside world....

• Word Count: 2627
• Approx Pages: 11
• Grade Level: High School

... -Rapid Eye Movement sleep. The first stage is a very light sleep with relaxed muscles. The second is characterized by brain waves getting larger. The third and fourth stages are where the sleeper is in a deep sleep in which their brain waves are huge and slow which makes this stage the hardest to wake from. After an hour or so, you shift into ... a highly active stage characterized by rapid eye movements, hence the name REM sleep. Suddenly your brain waves are almost the same as if you were awake. You're in the dreaming stage, which occurs several times across the course of the night (Kr...

• Word Count: 1829
• Approx Pages: 7
• Has Bibliography
• Grade Level: High School

... 's side. The right and left side of the mattress had deep impressions, about three inches, from all the people that have slept on it over the years. It looked like waves in the ocean since both sides had deep impressions. The bed was full size, and it sat up against the west wall under windows since the room was so small ... cold winter nights when I was a child. It was my job to bring in enough firewood to keep the wood stove going all night since it was the only source of heat we had. I remember my dad coming to my room and saying, "Boy you better get-out there and get more wood before...

• Word Count: 1589
• Approx Pages: 6
• Grade Level: High School