The Stages of Sleep
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Many researchers believe that reports of ghostly visions and alien abductions can be explained by _____ during N1 sleep.
Nearly _____ percent of a baby's sleep is REM, compared to about _____ percent for a normal, healthy adult.
Mateo is often a victim of bad dreams, frequently centered around being left at a store or getting lost at an amusement park. He sometimes wakes up from them, and calls for his parents to help him calm down. Mateo is experiencing
If the brain-wave pattern of a person playing a professional game of chess was recorded using an electroencephalogram (EEG), what type of brain waves would most likely be detected?
Janice is dreaming about walking her dog. However, in her dream, her dog is flying, the sidewalk is moving, and she has no awareness that this activity is odd. Janice is probably in _____ sleep.
Four-year-old Denise was sound asleep. Suddenly, without warning, she sat straight up and began to scream. Her mother tried to calm her down with no success. Finally, after about 45 seconds of what appeared to be a panic attack, Denise quietly lied back down. When morning came and Denise awoke, she could not remember anything that had happened during the night. It is likely that Denise experienced
Last night, Kayla thought she was awakened by a noise she heard outside of her bedroom door. When she tried to get up to see what was going on, she found she could not move. She tried to scream but could not make a sound. After several minutes, she was finally able to sit up and wondered what had just happened. The best explanation for Kayla's experience, according to sleep researchers, is that she experienced
A person has entered N3 sleep when delta waves account for _____ percent or more of brain wave activity.
The heart rate slows, breathing becomes more shallow and irregular, and an EEG would show the first signs of sleep spindles in _____ sleep.
Pieter was lying on the couch and had fallen asleep when all of a sudden his body jerked, and he woke up because he felt like he was falling. Pieter was most likely in which stage of sleep?