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Author Question: The age at which infants first exhibit the classic sleep stages seen in adults is ____ months. a. ... (Read 154 times)

Mollykgkg

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on: Jul 16, 2018
The age at which infants first exhibit the classic sleep stages seen in adults is ____ months.
 
  a. 6 c. 12
  b. 9 d. 18

Question 2

Sleep spindles occur at a frequency of ____ cycles/s.
 
  a. 4 to 7 c. 14 to 16
  b. 9 to 13 d. <3.5


harveenkau8139

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Reply #1 on: Jul 16, 2018
Answer to Question 1

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

Answer to Question 2

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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