Revision on UNIT 4- Sac 1

Question 1

A typical sleep cycle is

Answer 1

nrem 1,2,3,4,3,2, rem

Question 2

Which Stage has more than 50% delta waves?

Answer 2

NREM S4

Question 3

If i get hit by a ball but my sense of pain has dulled, which characteristic of ASC have i just experienced?

Answer 3

Perceptual distortion

Question 4

Describe the freq and amp of Theta waves

Answer 4

medium freq, mixed amp

Question 5

why is there no dreaming in microsleep?

Answer 5

bc microsleep brainwaves are similar to early stages of NREM sleep

Question 6

Which brain waves are present in microsleeps

Answer 6

alpha and theta

Question 7

The survival theory of sleep suggests that animals sleep less if they are ____________

Answer 7

vulnerable to predators

Question 8

Is quantitative data objective or subjective?

Answer 8

objective

Question 9

Is qualitative data objective or subjective?

Answer 9

subjective

Question 10

are EEG EOG and EMG examples of quantitative or qualitative?

Answer 10

Quantitative

Question 11

Give one benefit of testing sleep in a sleep lab

Answer 11

there are multiple measuring devices in a lab

Question 12

What is special in brain wave patterns NREM S2?

Answer 12

there are sleep spindles and k-complex waves

Question 13

What are sleep spindles?

Answer 13

brief bursts of high freq brain waves in NREM S2

Question 14

what are k-complex

Answer 14

brief bursts of lower freq but higher amp waves

Question 15

Name the brain waves involved in each stage of sleep

NREM 1,2,3,4

Answer 15

NREM 1
- alpha and theta

NREM 2

• mainly theta
• sleep spindles+ kcomplex

NREM 3
- theta and delta

NREM 4
- mainly delta

Question 16

Which stages are involved in ‘Slow wave sleep’

Answer 16

NREM 3+4

Question 17

What are the three things a hypothesis must include

Answer 17

1. pop
2. iv/dv
3. directrion

Question 18

In REM sleep, is body muscle movement high or low?

Answer 18

low

Question 19

Compare muscle movement in REM and NREM sleep

Answer 19

there is an increase in body muscle movement in NREM sleep compared to a decrease in REM sleep

Question 20

Define controlled processq

Answer 20

an action that requires high mental effort/foccused attention/ concious awareness

Question 21

What phsiological things happen during REM? (2)

Answer 21

Faster pulse and breathing

Question 22

What do stimulants and depressants to do brainwaves

Answer 22

stimulants increase beta

depressants increase alpha

Question 23

What does ‘saw tooth waves’ refer to

Answer 23

REM sleep

Question 24

give a limitation each for the Restorative theory and Evolutionary Theory

Answer 24

restorative
- we don’t sleep for much longer after unusual physical activity

evolutionary
- animals are still vulnerable to predators when asleep

Question 25

Give an example of a Circadian rhthm and Ultradian rhytm

Answer 25

Circadian: sleep wake cycle
Ultradian: REM/NREM cycle

Question 26

What stage of sleep is a sleep walker in?

Answer 26

S3 or 4 NREM

Question 27

how many hours of sleep do infants get

Answer 27

16 hours

Question 28

the evolutionary theory suggests that…

Answer 28

animals with many predators who cannot hid safely sleep less because they need to stay alert

Question 29

define partial sleep deprivation

Answer 29

inadequate amount of sleep either in terms of quantity or quality in a 24-hour period.

Question 30

define complete sleep deprivation

Answer 30

no sleep for an entire 24 hours or more for either one night or several nights in a row.