sleep and dreaming Flashcards
1
Q
What is REM sleep
A
Part of the sleep cycle with rapid eye movements caused by eyes moving a lot behind the eyelids when dreaming occurs
2
Q
What is the sleep cycle
A
A nightly pattern of deep sleep, light sleep and dreaming
3
Q
What is NREM sleep
A
Non rapid eye movement sleep
4
Q
What’s a sensory blockade
A
In REM sleep all sensory information is stopped
5
Q
What’s a neuron
A
A nerve cell that transmits information
6
Q
What is movement inhibition
A
in REM sleep, when movement is prevented
7
Q
How many stages of sleep are there
A
4
8
Q
What is stage 1 sleep
A
- Light sleep and can be easily woken up
- muscles are less active, eye movements slow and can twitch suddenly
- go through alpha and theta brainwaves
- alpha brain activity is restful and theta waves characterise a period between wake and sleep
9
Q
What is stage 2 sleep
A
- your brainwaves are slower, mainly theta waves
- eye movements stop and there are bursts of brain activity
- body temperature drops and heart rate slows
10
Q
What is stage 3 of sleep
A
- slow delta brainwaves but also faster brain waves
11
Q
What is stage 4 of sleep
A
- almost all waves are slow delta waves
- very hard to wake
- no eye movements
- when woken up - feel disoriented
12
Q
How many hours do we have of REM sleep each night
A
2
13
Q
What is REM sleep characterised as
A
- rapid irregular breathing
- muscles paralysed
- blood pressure rises
