« previous next »

Author Question: Sleep stage 3 is distinguished from sleep stage 4 by the: a. Presence of bursts of theta waves ... (Read 40 times)

lindiwe

  • Hero Member
  • *****
  • Posts: 577
on: Jul 16, 2018
Sleep stage 3 is distinguished from sleep stage 4 by the:
 
  a. Presence of bursts of theta waves
  b. Presence of sleep spindles and k-complexes
  c. Percentage of large delta waves present on the electroencephalogra m
  d. Percentage of relatively low-voltage, mixed-frequency waves

Question 2

What is the distinguishing feature of the electroencephalogra m during sleep stages 3 and 4?
 
  a. Small beta waves c. Sleep spindles
  b. Large k-complexes d. Large delta waves


kbennett34

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: C
The distinction between stage 3 and stage 4 is usually found in the presence of large delta waves, or slow waves. At the beginning of stage 3, delta waves constitute 20 to 50 of the electroen-cephalogram. Stage 4 is identified by the presence of the delta waves for at least 50 of the electroencephalogra m recording.

Answer to Question 2

ANS: D
The deepest stages of non-REM sleep (stages 3 and 4) are referred to as slow-wave sleep because of the presence of large delta waves that appear when the sleeper enters these stages.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Electrocardiography. (a) Electrodes are placed on the patient’s chest to record the electrical event Electrocardiography. (a) Electrodes are placed on the patient’s chest to record the electrical event
Course of infection by stage Course of infection by stage
Slow-Wave Sleep and Learning Slow-Wave Sleep and Learning
Suzanne Lacy, Whisper, the Waves, the Wind. Suzanne Lacy, Whisper, the Waves, the Wind.
(A) Dilation stage: uterine contractions cause dilation of the cervix; (B) expulsion stage: birth, ... (A) Dilation stage: uterine contractions cause dilation of the cervix; (B) expulsion stage: birth, ...
A free-running circadian sleep–wake cycle 25.3 hours in duration. Despite living in an unchanging ... A free-running circadian sleep–wake cycle 25.3 hours in duration. Despite living in an unchanging ...
Video: Dissociative Disorders (Part 1)

For a complete list of videos, visit our video library