5:23 - sleep patterns/theories

Question 1

circadian rhythm

Answer 1

an internal biological clock in sync with the cycle of night in day

Question 2

when do body temps change?

Answer 2

rise in the morning, peak in the day, dip in the early afternoon, and drop in the evening.

Question 3

owls

Answer 3

most eens and YAs - evening energized with performance rising across the day

Question 4

larks

Answer 4

most older adults - more energized in the morning and performance declines as the day goes on

Question 5

women are more morning-orientated beause of…

Answer 5

menopause and bearing children

Question 6

alpha waves

Answer 6

slow brain waves of a relaxed, awake state

Question 7

NREM-1

Answer 7

• the transition into sleep
• hallucinations occur

Question 8

NREM-2

Answer 8

• sleep spindles (rapid bursts of rythmic activity
• could easily awake
• lasts 20 minutes and grows longer through the night

Question 9

NREM-3

Answer 9

• brain emits large and slow delta waves
• hard to awaken
• “delta sleep”
• lasts 30 minutes
• grows shorter and eventually disapears

Question 10

REM sleep

Answer 10

• lasts ten minutes
• an hour after falling asleep
• sharp, rapid brain waves
• heart rises
• breathing is rapid and irregular
• vivid dreams
• aka pandoxical sleep because body is aroused internally but externally calm
• minor twitches
• eyes dart around ever 30 seconds
• eye movement starts dreams
• genitals become aroused
• brain’s motor cortex is active, but the brainstem blocks messages
• paralyzed
• grows longer through the night (20-25% of a night’s sleep is spent in REM)

Question 11

what are sleep patterns influenced by?

Answer 11

genetics and culture

Question 12

superachiasmatic nucleus (SCN)

Answer 12

a pair of cell clusters in the hypothalamus that controls circadian rhythm. In response
to light, the SCN causes the pineal gland to adjust melatonin production, thus modifying our feelings of sleepiness.