Module 4.3

If you were interested in determining if the volume of the hippocampus is associated with the amount of stress a person was experiencing, which of the following methods would be the best choice?

CAT

Evoked potentials in the brain are most likely to be detected by a(n):

EEG.

Which of the following brain imaging techniques measures faint magnetic fields?

MEG

Which of the following brain imaging techniques does NOT provide a functional measure of brain activity?

MRI

Which of the following methods is dependent upon injecting a radioactive chemical into the blood to measure blood flow?

PET

What is the major difference between how phrenologists and today's researchers study the brain?

Phrenologists did not critically examine their data.

An ablation is:

a brain area that has been removed.

So far, it appears that the brain feature most strongly correlated with intelligence in humans is the:

amount of gray matter.

A lesion is:

an area that has been damaged.

The purpose of creating a sham lesion is to:

assess the effects of introducing an electrode.

How does the method of transcranial magnetic stimulation of brain areas differ from magnetic inactivation?

brain activation results from mild, brief magnetic stimulation

One major problem with studies that use PET or measures of regional cerebral blood flow is:

choosing an appropriate comparison condition

Which of the following techniques is dependent upon the release of oxygen from hemoglobin molecules?

fMRI

Researchers using a biochemical method to direct a mutation to a particular gene are using the ______ approach.

genetic

Based on brain-to-body weight ratio, it appears that:

intelligence is not simply an outcome of this ratio.

The study of relating skull anatomy (bumps and depressions) to behavior is known as:

phrenology.

A stereotaxic instrument would most likely be used for:

placing an electrode in the brain.

An MRI device creates an image of the brain based on:

release of electromagnetic energy from atomic nuclei.

Which of the following species has the highest brain-to-body ratio?

squirrel monkey

Women on the average have a greater density of neurons in part of the ____.

temporal lobe

An electroencephalograph measures:

the average activity of the cells in a given region of the brain.

Computerized axial tomography creates an image from:

x-rays.