Sleep Flashcards
What impacts why we sleep
Food intake, body temperatures, glucose and circadian rhythms
What does zeitgeber mean and what does it do
Time giver. Sets biological clock
What sets our biological clocks
Light, exercise, eating, and socialization
Why is jet lag bad
Increases cortisol levels which effect hippocampal volume
What is our biological clock dependant on
Superchiasmatic Nucleus
What does Superchiasmatic Nucleus mean
Nuclei located above the optic nerve
What happens when there is damage to the Superchiasmatic Nucleus
Free range rhythms (no sense of time)
What is the best way to reset biological clock
retinohypothalamic path (bring light to optic nerve)
When does melatonin start to rise
2-3 hours before bed
Where is melatonin released
Pineal gland
How many hz per second are produced in the relaxed awake stage of sleep
8-12 HZ
What happens in stage 1 of sleep
6-8 HZ per second irregular EEG waves and slower amounts of brain activity
What happens in stage 2 of sleep
K-complexes nad Sleep spindles
What happens in stage 3 of sleep
EEG becomes more stabalized and slowed brain activity
What happens during REM sleep
muscle relaxation, loss of temp. regulation, rapid eye movement, EEG patterns resemble person awake
