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VCE PSYCHOLOGY > Sleep > Flashcards

Sleep Flashcards

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1
Q

What are the benefits and limiations of Video monitoring sleep

A

BENEFITS

  • individual undisturbed
  • monitoring can happen at home or lab

LIMITATIONS

  • obtaining data time consuming
  • results subjective/diff. interpretations
  • results may be limited or inconclusive
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2
Q

What are the benefits and limiations of using Self Reports to measure sleep? (3 each)

A

BENEFITS

  • valuable bc from individuals perpective
  • time-effective
  • can indicate if someone is in ASC

LIMITATIONS

  • hard to compare results with other people
  • hard to describe experiences accurately
  • intinterpretation can be subjective
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3
Q

How many cycles do humans experience per night? How long is each cycle

A

6-7 cycles and 90min/cycle

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4
Q

How many stages in sleep are there in TOTAL

A

5

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5
Q

Which stage of sleep is the transitioning stage from wakefulness to sleep?

A

NREM Stage 1

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6
Q

Which stage of sleep shows one losing awareness and falling asleep? How many minutes does one sleep in this stage for?

A

NREM S1 - 5 to 10 min

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7
Q

In NREM 1, which two brain waves are invovled

A

alpha +theta

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8
Q

Which stage displays that one has fallen asleep? Name the main brain wave and other characteristics occuring in this stage.

A

NREM S2

  • theta
  • k complex and sleep spindles
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9
Q

Which brain waves are present in NREM S3

A

theta + delta

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10
Q

What are the 4 features in NREM S4

A
  1. deepest sleep and hard to wake
  2. mainly DELTA
  3. body undergoes growth +development
  4. invovled in 2 cycles at the start of night only
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11
Q

Which stage consists of dreaming?

A

REM sleep (rapid eye movement)

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12
Q

In REM sleep, which brain waves are present

A

beta-like waves

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13
Q

Why do humans remember dreams before they wake up?

A

Because REM sleep increases throughout the night

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14
Q

Infants/babies experience _______ REM because _____________. They also have _____ NREM S4

Adults experience _____ NREM S4

A

more, thier brains are still developing

less

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15
Q

Which stage of sleep replenishes the brain?

A

REM

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16
Q

Which stage of sleep replenishes the body?

A

NREM

17
Q

Name the 2 Biological rhythms of sleep

A

Circadian + Ultradian

18
Q

What is a Circadian Rhythm?

A

a 24/25 hour cycle that human body goes through everyday

19
Q

In a Circadian Rhythm, what does one rely on? give examples

A

Zeitgebers (means ‘cue’)

  1. light
  2. dark
20
Q

In a Circadian Rhythm, what acts as the ‘internal clock’? which part of the brain is it located?

A

Suprachiasmatic Nucleus - HYPOTHALAMUS

21
Q

In a Circadian Rhythm, what is the function of the Suprachiasmatic Nucleus?

A

regulates the two hormones; cortisol + melatonin

22
Q

In a Circadian Rhythm, when is Cortisol (hormone) released and what is its function?

A

released in LIGHT; increases ones alertness

23
Q

In a Circadian Rhythm, when is Melatonin (hormone) released and what is its function?

A

released when DARK; acts as a sleep hormone to decrease alertness

24
Q

What are the two theories explaining the Purpose of Sleep?

A
  • Restorative Theory

- Evolutionary Theory

25
Q

In the Restorative Theory, what is the function of sleep?

A
  • to replenish our bodies by recharging depleted energy resources
  • REM replenishes brain
  • NREM replenishes body
26
Q

In the Restoritative Theory,
what is Adenosine?
what does it do when we are awake, and asleep?

A
  • a neurotransmitter produced when energy is used
  • the accumulation of adenine makes you more drowsy
  • accumulates when awake, decreases when asleep
27
Q

According to the Restoriative Theory, what does sleep do? (7)

A
  1. ADENOSINE neurotransmitter decreases when asleep
  2. sleep increases growth
  3. sleep increases impunity to disease
  4. sleep increases alertness
  5. sleep increases mood
  6. NREM replenishes body
  7. REM rep. brain/mind
28
Q

The more Adenosine present, the more _________ and _______ we feel.

Why does Adenosine decrease when we are asleep?

A

tired and fatigued

It decreases so that we feel refreshed and energized the next morning

29
Q

In one word, The Evolutionary Theory suggests that we sleep in order to _________

A

survive

30
Q

List the three things that support the Evolutionary Theory

A
  1. sleep depends on the need to find food
  2. sleep depends on an animal’s vulnerability to predators
  3. sleep conserves energy
31
Q

Give 1 limitation for each the Restorative Theory

A

Restorative

- protein synthesis need for replenishing body shows down bc brain is very active during REM sleep

32
Q

Give 1 limitation for the Evolutionary Theory

A

Evolutionary

- animals are vulnerable to predators even when sleeping

33
Q

What is the purpose of REM sleep?

A

REM consolidates memory and restores the brain

34
Q

What is the purpose of NREM sleep?

What is released in NREM S3+4?

A

NREM restores body and replenishes energy

S3+4, growth hormones released for body GROWTH and REPAIR

35
Q

What type of sleep increases periodically as the night progresses?

A

REM

36
Q

What type of sleep increases periodically as the night progresses?

A

NREM

VCE PSYCHOLOGY (17 decks)

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