BioCog 8B sleep Flashcards
1
Q
wakefulness concentration
A
- alpha waves
2
Q
wakefulness normal
A
- beta waves
3
Q
stage 1 sleep
A
- theta waves
4
Q
stage 2 sleep
A
- theta waves
- sleep spindle
- K-complexes
- when woken up you dont know you were asleep
5
Q
REM sleep
A
= paradoxical sleep
- beta waves (as in bein awake)
- EEG desynchronization
- PGO waves before waking up
- LGN and primary visual cortex activity
- less frontal lobe
- skeletal muscle paralysis
- genital activity
6
Q
stage 3 sleep
A
- delta waves
- deepest
- fragmented dreams
- strong stimulus suppression
7
Q
REM dreams
A
- narrative
- visual
- emotional
- no time and space continuity
8
Q
waking up from REM
A
- 75-95% dream recall
- waking up spontaneously is likely
- feel awake and alert
9
Q
waking up from stage 3-4
A
- low dream recall
- feel drowsy and disoriented
10
Q
sleep deprivation physiological
A
- loss thermoregulation
- increased sugar fat metabolism
- weight loss
- immune system disruption
- death
11
Q
sleep deprivation cognitive
A
- concentration problems
- hallucinations
12
Q
catching up with sleep
A
- you catch upu only with REM and stage 4
13
Q
sleep 4 function
A
- sugar supply for astrocytes
- fueling brain cells
- clears adenosine and others
- consolidates declarative memory
14
Q
REM function
A
- alertness/vigilance
- brain development
- non-declarative learning
15
Q
control sleep cycle possibilities
A
- chemical building up during sleep
2. chemical building up during waking (-> adenosine)
16
Q
control of arousal + alertness
A
- acetylcholine
- norepinephrine
- serotonine 5-HT
- histamine
- orexin/hypocretin
17
Q
flip-flop slow wave
A
- vlPOA promotes sleep
- inhibited by arousal systems
- arousal systems inhibited by GABA
18
Q
caffeine
A
- blocks adenosine receptors in vlPOA
19
Q
SD
A
= sublateraodorsal nucleus
- REM-ON
20
Q
vlPAG
A
- REM-OFF
21
Q
amygdala during sleep
A
- emotions often trigger REM
- because theyre interpreted as dreams
22
Q
pseudoinsomnia
A
- you think youre getting too little sleep
23
Q
sleepapnea
A
- trouble breathing during sleep
24
Q
sudden infant death sydrom
A
- weakening of breathing muscles
- babies dont have the reflex to wake up when suffocating
25
somnambulism
- sleepwalking
26
REM sleep behaviour disorder
- dreams are acted out
| - motor system is not inhibited
27
narcolepsy causes
- lack of orexin
| - overactivation in lateral hypothalams
28
narcolepsy symptoms
- cataplexy (atonia during waking)
- often triggered by emotions
- sleep attacks
- pre- and postsleep paralysis
- hypagnogic hallucinations (dreams before sleeping)
29
circadian rhythm
- circa one day
| - 24h
30
biological clock
- internal
| - suprachiasmic nucleus of hypothalamus
31
zeitgeber
- light
- sound
- temperature
- eating pattern
etc
32
SCN cell
- each has its own rhythm
- produces protein
- this inhibits production
- > feed back loop
33
seasonal rhythm
- less light
- more melatonine
- more sleep
- lower body temperature
- less testosterone
