« previous next »

Author Question: Sleep stage 3 is distinguished from sleep stage 4 by the: a. Presence of bursts of theta waves ... (Read 77 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?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Microscopic photo taken by Opportunity showing a gray hematite concretion, indicative of the past pr Microscopic photo taken by Opportunity showing a gray hematite concretion, indicative of the past pr
Diverticulosis. It is the presence of abnormal pouches in the wall of the large intestine (diverticu Diverticulosis. It is the presence of abnormal pouches in the wall of the large intestine (diverticu
Restless Sleep Restless Sleep
Transitions from One Stage to Another: Some Possible Triggering Situations of Experiences that may ... Transitions from One Stage to Another: Some Possible Triggering Situations of Experiences that may ...
Four Possibilities in Judging the Presence or Absence of a Stimulus Four Possibilities in Judging the Presence or Absence of a Stimulus
Early Childhood Caries When infants are given a bottle shortly before sleep Early Childhood Caries When infants are given a bottle shortly before sleep
Video: Types of Shock (Part 2 of 2)

For a complete list of videos, visit our video library