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I&P- Izzy > Sleep > Flashcards

Sleep Flashcards

1
Q

What are the two halves of a nights sleep?

A

> Core sleep

>Optional Sleep

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2
Q

What is core sleep?

A

> First 5 hours
Most deep (stage 3& 4)
Half REM sleep

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3
Q

What is optional sleep

A

> next 2+ hours

>stage 1 & 2

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4
Q

What is REM sleep

A

> Rapid eye movement

>High chance of dreaming

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5
Q

What did the bunker study show?

A

> Circadian rhythm> shifted by hour every night

>Biological rhythm 25hr

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6
Q

What developmental changes occur with sleep?

A 
>Reduce total sleep time
>Reduction %REM
>Reduction in stage 3 & 4
   >Mostly lost by 40
   >Reduction in parasomnias
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7
Q

What is a circadian rhythm

A

> 24 hr cycle biological processes happen

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8
Q

What is a ultradian rhythm

A

> rhythm with frequency less than 24 hr

>Occurs repeatedly within 24 hr time period

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9
Q

How does sleep follow a ultradian rhythm?

A

> Stair case

>Repeats stages

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10
Q

What do we measure in sleep?

A

> Quality
Movements
EEG output
Dream content

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11
Q

What is latency?

A

> Time between setting a behaviour and initiation of that behaviour

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12
Q

When are dreams most likely to occur?

A

> x2 in REM

>6X longer & vivid

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13
Q

Characteristics of a dream

A 
>Intensely visual
>No smell, taste, pain
>Movement
>Bizarre/ illogical
>Emotional
>No awareness
>Unremembered
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14
Q

Features of insomnia

A

> Delayed sleep onset
Disturbed sleep
Early morning waking

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15
Q

Insomnia causes?

A

> Psychological problems
Medical disorders
Social environment

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16
Q

Insomnia treatment

A

> Hypnotic drugs
Sleep education
Sleep hygiene
Dealing with tension/ intrusive thoughts

17
Q

What is Nacrolepsy?

A

> Triggered by emotion

18
Q

Feature of Nacrolepsy

A

> Sleep attack
Cataplexy (Paralysis of voluntary muscles)
Sleep paralysis
Vivid sleep-onset dreams

19
Q

What is Sleep paralysis

A 
Hallucinations
>Conscious, eye open, cannot move
Ongoing sleeping and waking
REM sleep intrusion
20-60% experience once in life
20
Q

What did Randy Gardner do?

A

> 265hr (11 days) no sleep

21
Q

What symptoms did Randy Gardner show on day 2

A

> Difficulty focusing eyes

22
Q

Insomnia prevalence

A

30%

23
Q

Prevalence of Nacrolepsy

A

0.15%

24
Q

What symptoms did Randy Gardner show on day 5?

A

> Irritable
Uncooperative
Memory lapses
Problems concentrating

25
Q

What symptoms did Randy Gardner show in day 9?

A

> Fragmented thought patterns
Blurred vision
Major memory lapses

26
Q

What percentage of lost sleep did Randy Gardner regain?

A

> 24%

27
Q

What % of each stage of sleep did randy gardner regain?

A

> Stage 1 & 2: 7%
Stage 4: 68%
REM : 54%

28
Q

What function is most effected by lost sleep?

A

> Cortical region

29
Q

How many nights sleep does our reserve capacity cover?

A

> 1

30
Q

In summary what fraction of sleep in recovered and what stages are prioritised?

A

> 1/3

>stage 4 & REM

I&P- Izzy (11 decks)

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