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91. Judith has been asked to visit a well-known neurologist

Question : 91. Judith has been asked to visit a well-known neurologist : 1411870

 

91. Judith has been asked to visit a well-known neurologist in her town, who will examine the levels of glucose in Judith’s brain. Which of the following techniques will the neurologist most likely use to conduct the examination?

A. Positron-emission tomography (PET scan)

B. Computerized axial tomography (CAT scan)

C. Transcranial magnetic stimulation (TMS)

D. Magnetic resonance imaging (MRI)

92. Meredith suspects that her mother is suffering from dementia. However, Joy, the psychiatrist, asks her to visit the neurologist to get an X ray of her mother’s brain to confirm this diagnosis. Which of the following brain imaging techniques will the neurologist most likely use to get the X ray?

A. Transcranial magnetic stimulation (TMS)

B. Positron-emission tomography (PET scan)

C. Magnetic resonance imaging (MRI)

D. Computerized axial tomography (CAT scan)

93. Magnetic resonance imaging (MRI) is a technique that:

A. measures the rate at which brain cells use glucose.

B. constructs a three-dimensional image from X rays.

C. transduces the electrical activity of individual neurons.

D. constructs images of a person’s tissues and biochemical activities.

94. In which of the following ways does functional magnetic resonance imaging (fMRI) detect the functioning of the brain?

A. It exploits changes in blood oxygen that occur in association with brain activity.

B. It measures the amount of glucose in various areas of the brain.

C. It studies the brain only when the brain is active.

D. It establishes a cause-effect relationship between variables associated with brain activity.

95. Adrian, a neurologist, is examining the brain activity of children with attention deficit hyperactivity disorder. He observes images of their brains while they are performing a reading task and then again when they are not engaged in the activity. He compares these readings. Although he establishes a relationship between the two variables, he is not able to establish that one variable causes the other. Which of the following brain imaging techniques is he most likely to have used for his study?

A. Functional magnetic resonance imaging (fMRI)

B. Positron-emission tomography (PET scan)

C. Computerized axial tomography (CAT scan)

D. Transcranial magnetic stimulation (TMS)

96. Which of the following principles underlies the technique of functional magnetic resonance imaging (fMRI)?

A. It rests on the principle that mental activity is associated with changes in glucose levels in the brain.

B. It rests on the principle that mental activity is associated with changes in the oxygenated blood levels in the brain.

C. It rests on the principle that mental activity is associated with changes in hydrogenated blood levels in the brain.

D. It rests on the principle that mental activity is associated with changes in magnetic fields in the brain.

97. Which brain imaging technique allows scientists to draw causal inferences between variables?

A. Positron-emission tomography (PET scan)

B. Functional magnetic resonance imaging (fMRI)

C. Computerized axial tomography (CAT scan)

D. Transcranial magnetic stimulation (TMS)

98. Michael, a researcher in the field of neuroscience, has a theory about a specific area of the brain causing difficulties in face recognition. To draw a solid causal inference, he intends to test his hypothesis on dogs by disrupting regions of their brains and examining the effects of this disruption on the dogs’ face-recognition capacity. Which of the following techniques should be used by Michael to achieve his purpose?

A. Computerized axial tomography (CAT scan)

B. Magnetic resonance imaging (MRI)

C. Transcranial magnetic stimulation (TMS)

D. Functional magnetic resonance imaging (fMRI)

99. Which of the following is true of the brain imaging technique known as transcranial magnetic stimulation (TMS)?

A. It does not allow researchers to draw cause and effect conclusions.

B. It does examine neuronal functioning following brain-injuring events.

C. It is not used to treat any neurological and psychological disorders.

D. It is used to examine the brain activity in rest and action states.

100. In the context of the organization of the brain, which part of the hindbrain regulates vital functions such as breathing and heart rate?

A. Hypothalamus

B. Midbrain

C. Medulla

D. Pons

 

 

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