Scoring and Sleep Stage D (p. D24

Question 1

How long is an epoch?

Answer 1

30 seconds

Question 2

If two or more stages are found in one epic, which stage should you assign to the epoch?

Answer 2

The stage occupying the greatest portion of the epoch

Question 3

When is the scoring done?

Answer 3

Between lights out and lights on.

Question 4

What frequency is the slow-wave activity?

Answer 4

0.5-2 Hz amplitude (height) of 75 uV peak to peak in frontal derivations.

Question 5

Describe delta waves. ___ Hz

Answer 5

0-3.99 Hz

Question 6

Describe theta waves. ___ Hz

Answer 6

4-7.99 Hz

Question 7

Describe alpha waves. ___ Hz

Answer 7

8-13 Hz (Alpha waves are seen often on the test.)

Question 8

Describe beta waves. ___ Hz

Answer 8

Greater than 13 Hz

Question 9

Alpha waves may also be called ___ waves.

Answer 9

Berger waves

Question 10

How do you score stage W?

Answer 10

Contains alpha waves in the occipital area (EOG) and they are very fast.
Eye blinks or eyes open/closed will be seen
When eyes are open, alpha waves are reduced
Alpha waves do not appear until 3 years of age

Question 11

What is an eye blink? How many Hz?

Answer 11

A vertical eye movement at 0.5-2 Hz in wakefulness.

Question 12

What is a reading eye movement?

Answer 12

Conjugate eye movements having a slow phase followed by a rapid phase in the opposite direction as the individual reads.

Question 13

Rapid Eye Movements

Answer 13

Irregular, sharply peaked eye movements with an initial deflection usually lasting less than 500 msec.

Question 14

At what stage do you see rapid eye movements?

Answer 14

Stage R (REM stage)

Question 15

What is another sign that REM is occurring?

Answer 15

Muscle tone in the chin is very quiet