Chapter 6

Question 1

The generators for the EEG are elements in layers __________ of the cerebral cortex.

Answer 1

V and VI

Question 2

The __________ technique provides excellent resolution but poor generalizability about brain activity.

Answer 2

single-cell recording

Question 3

The use of “annihilation events” is part of the __________ technique of brain imaging.

Answer 3

PET

Question 4

The __________ method of brain imaging involves spinning hydrogen protons.

Answer 4

MRI

Question 5

Which method would be most practical in evaluating depth of anesthesia?

Answer 5

EEG

Question 6

Which method can detect neurotransmitter molecules?

Answer 6

MRS

Question 7

Which method induces changes in electrical activity in the brain?

Answer 7

brain stimulation

Question 8

Which is a method of enhancing conventional X-ray radiography by taking advantage of the fact that X-rays are not absorbed by air?

a. pneumoencephalography
b. computerized tomography
c. positron emission tomography
d. magnetic resonance imaging

Answer 8

A. pneumoencephalography

Question 9

Which is a major advantage of magnetic resonance imaging (MRI)?

a. It provides the highest resolution of all the imaging techniques.
b. It can image the biochemical status of the brain.
c. It provides great clarity in distinguishing between different regions of the brain and even between different regions of the cortex.
d. It can detect relative amounts of a given neural transmitter.

Answer 9

C. It provides great clarity in distinguishing between different regions of the brain and even between different regions of the cortex.

Question 10

Which is NOT an advantage of the PET scan over other imaging methods?

a. The PET scan can detect the decay of a wide range of radiochemicals.
b. The PET scan can detect the density of neurotransmitter receptors or the metabolic activities associated with degenerative processes that might be related to aging.
c. The PET scan can detect the degeneration of myelin that occurs in multiple sclerosis or the degeneration of neurons that occurs in Alzheimer’s disease.
d. The PET scan is widely used for the study of cognitive function.

Answer 10

C

Question 11

Tom was in a car accident. He was given a series of tests to see if his skull or brain was damaged in the accident. Which tests may he have been given?

a. an X-ray to assess skull damage and a CT scan to assess brain damage
b. an X-ray to assess brain damage and a CT scan to assess skull damage
c. an X-ray to assess skull damage and a deep brain stimulation to assess brain damage
d. a CT scan to assess brain damage and a deep brain stimulation to assess skull damage

Answer 11

A. an X-ray to assess skull damage and a CT scan to assess brain damage