Scoring Sleep

Question 1

N1 termination rules

Answer 1

> transition to N2, N3, REM
An arousal

Question 2

N2 termination rules

Answer 2

> transition to N3 and REM
An arousal

Question 3

N3 Termination rules

Answer 3

> transition to N2, REM
An arousal

Question 4

REM termination

Answer 4

> transition to N2
An arousal w/ cEMG movement

Question 5

Awake and alert frequency

Answer 5

13-30Hz
Low random, fast

Question 6

Drowsy/ awake eyes closed Hz

Answer 6

8-13 Hz
Alpha waves

Question 7

N1 Hz

Answer 7

4-7 Hz
Theta

Question 8

N2 charactistics

Answer 8

Sleep spindle 12-14 commonly
K complex
Central channel

Question 9

N3 Hz

Answer 9

0.5-4 Hz
Delta waves

Question 10

REM characteristics

Answer 10

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

Question 11

% of time in N1

Answer 11

4-5%

Question 12

% of time in N2

Answer 12

45-55%

Question 13

% of time in N3

Answer 13

16-21%

Question 14

% of time in REM

Answer 14

20-25%

Question 15

What happens to the body in N1

Answer 15

Light sleep, muscle tone decrease, occasional muscle twitch

Question 16

What happens to the body in N2

Answer 16

Breathing and heart rate slows, slights decrease in body temp

Question 17

What happens to the body in N3

Answer 17

Deep sleep begins, breathing is rhythmic

Question 18

What happens during REM

Answer 18

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

Question 19

Slow waves freq.

Answer 19

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

Question 20

Delta waves freq.

Answer 20

O-3.99Hz

Question 21

Theta freq.

Answer 21

4-7.99 Hz

Question 22

Alpha freq.

Answer 22

8-13Hz

Question 23

Synonym for alpha rhythm

Answer 23

Posterior Dominant Rhythm

Question 24

What are vertical eye movements?
Freq.

Answer 24

Eye blinks
.5-2.00Hz

Question 25

What do reading eye movements look like?

Answer 25

Slow phase followed by rapid phase

Question 26

Rapid eye movements

Answer 26

<500 milliseconds

Question 27

Slow eye movements

Answer 27

>500 milliseconds

Question 28

Alpha is seen in what region?

Answer 28

Occipital

Question 29

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

Answer 29

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

Question 30

Beta waves freq.

Answer 30

13+

Question 31

What percentage of people generate a limited amount of alpha?

Answer 31

10%

Question 32

What eye movements are associated with stage W?

Answer 32

- eye blinks -REM ( with high chin emg tone) -reading eye movements

Question 33

When can slow eye movements be seen?

Answer 33

-Eyes closed W -N1

Question 34

What EEG frequency is associated with N1?

Answer 34

LAMF (4-7Hz)

Question 35

What is a Vertex sharp wave?

Answer 35

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

Question 36

What is sleep onset?

Answer 36

Forst stage of sleep scored as anything other than W

Question 37

How do you score N1 if someone generates alpha?

Answer 37

If alpha stops and and replaced by 50% of LAMF

Question 38

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

Answer 38

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

Question 39

K- Complex

Answer 39

Negative followed by positive component Seen in frontal

Question 40

When is a K- complex associated with an arousal?

Answer 40

Within no more than 1 second of termination

Question 41

Sleep spindle

Answer 41

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

Question 42

Where is a slow wave seen?

Answer 42

Frontal region

Question 43

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

Answer 43

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

Question 44

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

Answer 44

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

Question 45

What does sawtooth waves look like?

Answer 45

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

Question 46

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

Answer 46

Continue in R, unless alpha or SEM is seen