Revision on UNIT 4- Sac 1 Flashcards

1
Q

A typical sleep cycle is

A

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

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2
Q

Which Stage has more than 50% delta waves?

A

NREM S4

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3
Q

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

A

Perceptual distortion

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4
Q

Describe the freq and amp of Theta waves

A

medium freq, mixed amp

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5
Q

why is there no dreaming in microsleep?

A

bc microsleep brainwaves are similar to early stages of NREM sleep

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6
Q

Which brain waves are present in microsleeps

A

alpha and theta

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7
Q

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

A

vulnerable to predators

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8
Q

Is quantitative data objective or subjective?

A

objective

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9
Q

Is qualitative data objective or subjective?

A

subjective

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10
Q

are EEG EOG and EMG examples of quantitative or qualitative?

A

Quantitative

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11
Q

Give one benefit of testing sleep in a sleep lab

A

there are multiple measuring devices in a lab

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12
Q

What is special in brain wave patterns NREM S2?

A

there are sleep spindles and k-complex waves

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13
Q

What are sleep spindles?

A

brief bursts of high freq brain waves in NREM S2

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14
Q

what are k-complex

A

brief bursts of lower freq but higher amp waves

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15
Q

Name the brain waves involved in each stage of sleep

NREM 1,2,3,4

A

NREM 1
- alpha and theta

NREM 2

  • mainly theta
  • sleep spindles+ kcomplex

NREM 3
- theta and delta

NREM 4
- mainly delta

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16
Q

Which stages are involved in ‘Slow wave sleep’

17
Q

What are the three things a hypothesis must include

A
  1. pop
  2. iv/dv
  3. directrion
18
Q

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

19
Q

Compare muscle movement in REM and NREM sleep

A

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

20
Q

Define controlled processq

A

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

21
Q

What phsiological things happen during REM? (2)

A

Faster pulse and breathing

22
Q

What do stimulants and depressants to do brainwaves

A

stimulants increase beta

depressants increase alpha

23
Q

What does ‘saw tooth waves’ refer to

24
Q

give a limitation each for the Restorative theory and Evolutionary Theory

A

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

evolutionary
- animals are still vulnerable to predators when asleep

25
Give an example of a Circadian rhthm and Ultradian rhytm
Circadian: sleep wake cycle Ultradian: REM/NREM cycle
26
What stage of sleep is a sleep walker in?
S3 or 4 NREM
27
how many hours of sleep do infants get
16 hours
28
the evolutionary theory suggests that...
animals with many predators who cannot hid safely sleep less because they need to stay alert
29
define partial sleep deprivation
inadequate amount of sleep either in terms of quantity or quality in a 24-hour period.
30
define complete sleep deprivation
no sleep for an entire 24 hours or more for either one night or several nights in a row.