Deck 18: Electroencephalography

Question 1

Respiratory alkalosis results in EEG waves _.

A) in the theta range
B) that are slower than delta waves
C) that resemble an epileptic seizure
D) that are flat

Answer 1

C

Question 2

Deep sleep is associated with _.

A) theta waves
B) delta waves
C) beta waves
D) alpha waves

Answer 2

B

Question 3

Alpha block, the suppression of alpha waves that can be seen in the EEG, occurs when .

A) one goes from a drowsy state into deep sleep
B) an individual is relaxed, with eyes closed
C) a person is in a coma
D) you open your eyes, after having relaxed with eyes closed

Answer 3

D

Question 4

EEG studies are valuable because .

A) they are relatively easy to record and analyze
B) they can reveal many kinds of brain abnormalities
C) they are noninvasive
D) they are noninvasive, they can reveal many kinds of brain abnormalities, and they are relatively easy to record and analyze

Question 5

An alert individual has a .

A) relatively slow frequency pattern of brain waves
B) relatively rapid frequency pattern of brain waves
C) nearly flat EEG

Question 6

The electroencephalogram (EEG) is a recording of .

A) electrical activity of muscles of the skull
B) summed electrical activity of many neurons in the brain
C) electrical potentials in the skin of the scalp

Question 7

An EEG showing either very rapid or extremely slow frequency brain waves may occur when an individual is .

A) alert and speaking
B) unconscious
C) moving about
D) drowsy

Question 8

Which of the following EEG waves has the lowest frequency?

A) beta
B) delta
C) theta
D) alpha

Question 9

A flat EEG is a clinical sign of .

A) epileptic seizure
B) brain death
C) brain tumor
D) brain abscess

Question 10

Brain waves of this type predominate when an individual is attentive and alert.

A) delta
B) beta
C) theta
D) alpha

Question 11

A physician may order an EEG study if the patient is suspected of having .

A) a possible fracture of the frontal bone
B) brain damage resulting from a deep cut in the scalp
C) a broken nose
D) a tumor

Question 12

An EEG study may be used to diagnose _ .

A) visual abnormalities
B) epilepsy
C) hormonal disorders of the brain
D) hydrocephalus

Question 13

All of the following is true of an EEG except .

A) it can be used to diagnose brain tumors
B) it measures the activity of specific regions of the brain
C) the frequency of the wave forms increases with mental activity and alertness
D) it represents summed electrical activity of many neuron in the brains

Question 14

This type of brain wave is normal in children, but abnormal in adults.

A) delta
B) theta
C) beta
D) alpha