Chapter 3 Flashcards
What is the circadian Rhythm
24 hour cycle in nature (sometimes 25 if cues are removed)
How does our energy levels vary?
Energy levels differ throughout the day
How to people overcome jet lag
1 hour difference = 1 day recovery
What is sleep debt
Amount of sleep needed-amount you actually got= sleep debt
What can sleep debt lead too
leads to obesity
makes you more susceptible to viral infections
What is the importance of the pineal gland
Apart of the endocrine system
controls melatonin
How does the pineal gland work
Photo sensitive (what our eyes see switches pituitary on and off)
releases melatonin into the blood stream
Turned on- Melatonin released
Turned- off- Wide awake
How long is a full sleep cycle
90 minutes
What machine can measure stages of sleep
EEG
Define alpha waves
onset of sleep
when relaxed, start of sleep
Define beta waves
awake, brain active
What happens when you are starting to fall asleep
Mild hallucinations, feeling of falling
As the night progresses we spend more time in ______ and less time in ______
We spend more time in REM and less time in stages 3 and 4
Define stage 1 of sleep and how long it lasts
Awake/asleep
Only a few minutes each night
Define Theta waves
introduces sleep
Day dreaming is apart of which sleep stage
stage 1
Define stage 2 of sleep
More theta waves progressively slower
Sleep spindles (short bursts of rapid brain waves)
What is k-complex
waves seen during the 2nd sleep stage
Define stage 3 and 4
Vital for restoring body’s growth hormone and good overall health
Groggy
Muscles/tissue repair. hormones restored
Define Delta waves
slow and deep waves during 3/4 sleep stage
Define REM sleep
Rapid eye movement
Brain is very active, body essentially paralyzed
Paradoxical sleep (never existed)
Define REM rebound
Not getting enough sleep (not getting to all the steps)
Define Consciousness
Levels of awareness about ourselves and our environment
Immediate awareness
Is consciousness science based
no
Define Preconscious
information made easily available (conscious)
Define unconscious
Not available
Below the iceberg