Question 1

Which of the following brain waves has the highest frequency?

Accepted Answer

A)  Theta
B)  Beta
C)  Delta
D)  Gamma
E)  Alpha

Question 2

A high degree of alertness is indicated in the EEG by

Accepted Answer

A)  brain waves with a low frequency.
B)  brain waves with a high amplitude.
C)  brain waves with a medium amplitude and a medium frequency.
D)  brain waves with a high frequency.
E)  brain waves with a low amplitude.

Question 3

Which of the following is NOT true of the bipolar method of recording the EEG?

Accepted Answer

A)  The 2 main electrodes are placed on opposite sides of the head.
B)  The electrical potential difference is measured between the 2 main recording electrodes.
C)  The ground electrode is used as a reference point for the body's baseline voltage.
D)  The 2 main recording electrodes detect the movement of ions in the extracellular fluid of the cerebral cortex.
E)  All of these are true of the bipolar method of recording the EEG.

Question 4

Which type(s) of EEG waves become(s) dominant in sleeping adults, but also in some forms of brain disease?

Accepted Answer

A)  Delta
B)  Alpha and beta
C)  Beta
D)  Theta
E)  Delta and theta

Question 5

Many neurons firing in synchrony results in a brain wave with high amplitude.

Accepted Answer

A) True 
 B)False

Question 6

Alpha block occurs when a person closes his/her eyes, and changes from a state of concentration to a state of relaxation.

Accepted Answer

A) True 
 B)False  False

Question 7

Which of the following can NOT be assessed by an EEG?

Accepted Answer

A)  Helps establish brain death
B)  Helps determine whether an awake person is concentrating or drowsy
C)  Helps assess the state of muscle contraction when a person is lifting objects of various weights
D)  Helps to diagnose certain brain disorders
E)  All of these can be assessed using an EEG. C

Question 8

The most important ions used in action potentials of neurons are Na⁺ and K⁺ ions.

Accepted Answer

A) True 
 B)False

Question 9

How is desynchronization of the alpha waves observed in the EEG, when a person with eyes closed suddenly opens them?

Accepted Answer

A)  The amplitude of the alpha wave increases.
B)  The frequency of the alpha wave increases.
C)  The amplitude of the alpha wave decreases.
D)  The frequency of the alpha wave decreases.
E)  The alpha waves stop, as shown by an amplitude and a frequency of 0. C

Question 10

An electroencephalogram (EEG)is a recording of an action potential from a single active neuron.

Accepted Answer

A) True 
 B)False

Question 11

The amplitude of brain waves in the EEG experiment is measured in units of

Accepted Answer

A)  millimeters.
B)  inches.
C)  amperes.
D)  microvolts.
E)  Hertz.

Question 12

All 4 types of brain waves can usually be observed in the EEG of a normal adult.

Accepted Answer

A) True 
 B)False

Question 13

Which type(s) of EEG waves would you expect to be dominant in an awake person who is relaxing with eyes closed, and not concentrating on anything in particular?

Accepted Answer

A)  Alpha
B)  Theta
C)  Delta
D)  Beta
E)  Alpha and beta

Question 14

Which of the following is NOT a bodily function controlled by nerve impulses?

Accepted Answer

A)  Generation of thought processes
B)  Muscle contraction
C)  Problem solving and other higher mental functions
D)  Responses to various stimuli
E)  All of these are functions controlled by nerve impulses.

Question 15

Which of the following factors does NOT contribute to individual differences in the characteristics of brain waves?

Accepted Answer

A)  Personality
B)  Gender
C)  Age
D)  Type of activity the person is engaged in
E)  All of these factors contribute to individual differences in the characteristics of brain waves.

Exam 32: Electroencephalography I: Biopac Exercise

Which of the following brain waves has the highest frequency?

Correct Answer
verified

A high degree of alertness is indicated in the EEG by

Correct Answer
verified

Which of the following is NOT true of the bipolar method of recording the EEG?

Correct Answer
verified

Which type(s) of EEG waves become(s) dominant in sleeping adults, but also in some forms of brain disease?

Correct Answer
verified

Many neurons firing in synchrony results in a brain wave with high amplitude.

Correct Answer
verified

Alpha block occurs when a person closes his/her eyes, and changes from a state of concentration to a state of relaxation.

Correct Answer
verified
False

Which of the following can NOT be assessed by an EEG?

Correct Answer
verified
C

The most important ions used in action potentials of neurons are Na⁺ and K⁺ ions.

Correct Answer
verified

How is desynchronization of the alpha waves observed in the EEG, when a person with eyes closed suddenly opens them?

Correct Answer
verified
C

An electroencephalogram (EEG)is a recording of an action potential from a single active neuron.

Correct Answer
verified

The amplitude of brain waves in the EEG experiment is measured in units of

Correct Answer
verified

All 4 types of brain waves can usually be observed in the EEG of a normal adult.

Correct Answer
verified

Which type(s) of EEG waves would you expect to be dominant in an awake person who is relaxing with eyes closed, and not concentrating on anything in particular?

Correct Answer
verified

Which of the following is NOT a bodily function controlled by nerve impulses?

Correct Answer
verified

Which of the following factors does NOT contribute to individual differences in the characteristics of brain waves?

Correct Answer
verified

Exam 32: Electroencephalography I: Biopac Exercise

Which of the following brain waves has the highest frequency?

Correct AnswerverifiedShow Answer

A high degree of alertness is indicated in the EEG by

Correct AnswerverifiedShow Answer

Which of the following is NOT true of the bipolar method of recording the EEG?

Correct AnswerverifiedShow Answer

Which type(s) of EEG waves become(s) dominant in sleeping adults, but also in some forms of brain disease?

Correct AnswerverifiedShow Answer

Many neurons firing in synchrony results in a brain wave with high amplitude.

Correct AnswerverifiedShow Answer

Alpha block occurs when a person closes his/her eyes, and changes from a state of concentration to a state of relaxation.

Correct AnswerverifiedFalse

Which of the following can NOT be assessed by an EEG?

Correct AnswerverifiedC

The most important ions used in action potentials of neurons are Na⁺ and K⁺ ions.

Correct AnswerverifiedShow Answer

How is desynchronization of the alpha waves observed in the EEG, when a person with eyes closed suddenly opens them?

Correct AnswerverifiedC

An electroencephalogram (EEG)is a recording of an action potential from a single active neuron.

Correct AnswerverifiedShow Answer

The amplitude of brain waves in the EEG experiment is measured in units of

Correct AnswerverifiedShow Answer

All 4 types of brain waves can usually be observed in the EEG of a normal adult.

Correct AnswerverifiedShow Answer

Which type(s) of EEG waves would you expect to be dominant in an awake person who is relaxing with eyes closed, and not concentrating on anything in particular?

Correct AnswerverifiedShow Answer

Which of the following is NOT a bodily function controlled by nerve impulses?

Correct AnswerverifiedShow Answer

Which of the following factors does NOT contribute to individual differences in the characteristics of brain waves?

Correct AnswerverifiedShow Answer

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Correct Answer
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Correct Answer
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False

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C

Correct Answer
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C

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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