Chapter 11: Sleep Diagnostics

Chapter 11: Sleep Diagnostics

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

MULTIPLE CHOICE

 

1. Which of the following brain waveforms are present during wakefulness?
2. Alpha waves
3. Beta waves
4. Relatively low-voltage, mixed-frequency waves
5. Delta waves

a.	1 and 2	c.	3 and 4
b.	2 and 3	d.	1, 2, and 4

 

 

ANS:  A

An electroencephalogram shows that alpha waves and beta waves are present during wakefulness and diminish as the sleeper’s electroencephalogram converts to relatively low-voltage, mixed-frequency waves. Delta waves are present during slow-wave sleep or the deepest stages of non-REM sleep.

 

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2. Stage 2 non-REM sleep is characterized by the presence of which of the following?
3. Relatively low-voltage, mixed-frequency waves
4. Sleep spindles
5. Delta waves
6. K-complexes

a.	1 and 3	c.	1 and 4
b.	2 and 4	d.	2, 3, and 4

 

 

ANS:  D

Stage 2 non-REM sleep is identified on a sleeper’s electroencephalogram by the appearance of sleep spindles and K-complexes. Relatively low-voltage, mixed-frequency waves occur during non-REM stage 1 sleep. Delta waves are present during slow-wave sleep or non-REM sleep stages 3 and 4.

 

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3. Which characteristics are associated with REM sleep?
4. Lower level tonic activity
5. High-voltage, low-frequency waves on an electroencephalogram
6. Absence of tonic activity on an electromyogram
7. Often absent responsiveness to external stimuli

a.	1 and 2	c.	1, 2, and 4
b.	3 and 4	d.	2, 3, and 4

 

 

ANS:  B

Absence of tonic activity on an electromyogram and an often absent responsiveness to external stimuli are associated with REM sleep. Lower level tonic activity on an electromyogram and high-voltage, low-frequency waves on an electroencephalogram are indicative of non-REM sleep.

 

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4. Sleep spindles occur at a frequency of ____ cycles/s.

a.	4 to 7	c.	14 to 16
b.	9 to 13	d.	<3.5

 

 

ANS:  B

Sleep spindles are waveforms with waxing and waning amplitude that occur at a frequency of 9 to 13 cycles/s.

 

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5. The age at which infants first exhibit the classic sleep stages seen in adults is ____ months.

a.	6	c.	12
b.	9	d.	18

 

 

ANS:  C

By 12 months of age, infants exhibit the classic sleep stages seen in adults.

 

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