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My RPSGT Study > Scoring Sleep > Flashcards

Scoring Sleep Flashcards

1
Q

N1 termination rules

A

> transition to N2, N3, REM
An arousal

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2
Q

N2 termination rules

A

> transition to N3 and REM
An arousal

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3
Q

N3 Termination rules

A

> transition to N2, REM
An arousal

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4
Q

REM termination

A

> transition to N2
An arousal w/ cEMG movement

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5
Q

Awake and alert frequency

A

13-30Hz
Low random, fast

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6
Q

Drowsy/ awake eyes closed Hz

A

8-13 Hz
Alpha waves

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7
Q

N1 Hz

A

4-7 Hz
Theta

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8
Q

N2 charactistics

A

Sleep spindle 12-14 commonly
K complex
Central channel

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9
Q

N3 Hz

A

0.5-4 Hz
Delta waves

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10
Q

REM characteristics

A

Random, fast, sawtooth waves
Conjugate, irregular, sharply peaked rapid eye movements

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11
Q

% of time in N1

A

4-5%

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12
Q

% of time in N2

A

45-55%

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13
Q

% of time in N3

A

16-21%

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14
Q

% of time in REM

A

20-25%

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15
Q

What happens to the body in N1

A

Light sleep, muscle tone decrease, occasional muscle twitch

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16
Q

What happens to the body in N2

A

Breathing and heart rate slows, slights decrease in body temp

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17
Q

What happens to the body in N3

A

Deep sleep begins, breathing is rhythmic

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18
Q

What happens during REM

A

Rapid eye movements, absence of muscle tone, breathing and heart rate are erratic

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19
Q

Slow waves freq.

A

.5-2.0Hz
Peak to peak amplitude of greater than 75 microcolts

20
Q

Delta waves freq.

A

O-3.99Hz

21
Q

Theta freq.

A

4-7.99 Hz

22
Q

Alpha freq.

A

8-13Hz

23
Q

Synonym for alpha rhythm

A

Posterior Dominant Rhythm

24
Q

What are vertical eye movements?
Freq.

A

Eye blinks
.5-2.00Hz

25
Q

What do reading eye movements look like?

A

Slow phase followed by rapid phase

26
Q

Rapid eye movements

A

<500 milliseconds

27
Q

Slow eye movements

A

> 500 milliseconds

28
Q

Alpha is seen in what region?

A

Occipital

29
Q

What percentage of people don’t show alpha rhythm? How do you score their stage 1?

A

10%
1Hz less than baseline
☆ SL can be shorter for people who don’t show alpha

30
Q

Beta waves freq.

A

13+

31
Q

What percentage of people generate a limited amount of alpha?

A

10%

32
Q

What eye movements are associated with stage W?

A
  • eye blinks
    -REM ( with high chin emg tone)
    -reading eye movements
33
Q

When can slow eye movements be seen?

A

-Eyes closed W
-N1

34
Q

What EEG frequency is associated with N1?

A

LAMF (4-7Hz)

35
Q

What is a Vertex sharp wave?

A

K-complex, but less than 0.5 sec and seen over central region

36
Q

What is sleep onset?

A

Forst stage of sleep scored as anything other than W

37
Q

How do you score N1 if someone generates alpha?

A

If alpha stops and and replaced by 50% of LAMF

38
Q

If they do NOT generate alpha, how do you score N1?

A

Any of the following
-EEG activity range of 4-7 w/ slowing of background freq. Of greater than or equal to 1hz from stage W
-V- waves
- slow eye movements

39
Q

K- Complex

A

Negative followed by positive component
Seen in frontal

40
Q

When is a K- complex associated with an arousal?

A

Within no more than 1 second of termination

41
Q

Sleep spindle

A

Distinct sinusoidal waves 11-16 Hz
Commonly 12-14Hz

42
Q

Where is a slow wave seen?

A

Frontal region

43
Q

Can spindles be seen in any other sleep stage than 2?

A

It’s not common, but it may happen in N3

44
Q

What type of slow waves aren’t included in scoring N3?

A

●metabolic encephalopathies
●epileptic
●epileptiform activity
●non-cerebral origin

45
Q

What does sawtooth waves look like?

A

Contoured, triangular, often seated 2-6Hz
Over central region
Usually preceeding REM burst

46
Q

How to score major body movement if it interrupts REM sleep?

A

Continue in R, unless alpha or SEM is seen

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