Deck 7: Extension: C - Imaging the Brains Activity

Question 1

Which method induces changes in electrical activity in the brain?

A) electrical recording
B) brain stimulation
C) X-ray imaging
D) dynamic imaging

Answer 1

brain stimulation

Question 2

Tom was in a car accident. He was given a series of tests to see if his skull or brain were 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 cerebral angiography to assess cognitive function
D) a CT scan to assess brain damage and cerebral angiography to assess skull damage

Answer 2

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

Question 3

The generators for the EEG are pyramidal neurons in layers _____ of the cerebral cortex.

A) I and II
B) III and IV
C) V and VI
D) I and VI.

Answer 3

V and VI

Question 4

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

Question 5

The _____ method of brain imaging involves spinning hydrogen protons.

A) MEG
B) MRS
C) MRI
D) ERP

Question 6

The _____ technique provides excellent resolution but can only be applied with humans in exceptional circumstances.

A) ERP
B) single-cell recording
C) EEG
D) EKG

Question 7

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 Key

Question 8

Who developed the first useful EEG methods?

A) Berger
B) Aserinsky
C) Freud
D) Fox

Question 9

Which method can detect neurotransmitter - related molecules?

A) CT
B) MRS
C) NRI
D) MEG

Question 10

Which method would be MOST practical in evaluating the depth of anesthesia?

A) MRI
B) MEG
C) EEG
D) EKG

Question 11

The use of annihilation events is part of the _____ technique of brain imaging.

A) PET
B) MEG
C) fMRI
D) EEG

Question 12

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 types of brain tissue and cerebrospinal fluid.
D) It can detect relative amounts of a given neural transmitter.