Comprehension Check 3.3: Reasearch Methods

Question 1

Which of the following is a method to inactivate a brain area temporarily?

Answer 1

Transcranial magnetic stimulation

Question 2

Which of these is the first step for positron-emission tomography(PET)?

Answer 2

Inject a radioactive chemical into the blood

Question 3

Which of these is first step in using the optogenetic technique?

Answer 3

Attach light-sensitive proteins to a virus

Hint: optics is the study of light so optogenetic light plus genetics( hope that helps)

Question 4

What is one advantage of fMRI over PET scan?

Answer 4

The fMRI technique does not expose the brain to radioactivity

Question 5

Suppose someone demonstrates that a particular brain area becomes active when people listen to music. What would be a good way to test whether this brain area is really specialized for music perception?

Answer 5

Test whether we can use fMRI recordings to quests what kind of music someone is listening to

Question 6

Which of these methods measures brain anatomy but not brain activity?

Answer 6

MRI

Hint : MRI and fMRI are different in how fMRI deals with brain function AKA activity

Question 7

Comparing MRI and fMRI, which one(s) measure the responses of brain chemicals to a magnetic field? Which one(s) show which brain areas are most active at the moment?

Answer 7

Both measure responses of brain chemicals to a magnetic field. Only fMRI shows which brain areas are most active at the moment.

Question 8

In which regard, if either, do human brains exceeds those of all other species?

Answer 8

Humans do not exceed all other species in either regard.

Question 9

Most studies using modern methods show a moderate positive correlation between brain size and IQ scores. Nevertheless, interpreting those results is problematic. Why?

Answer 9

On average, men have larger brains than woman, but they have equal IQ scores.

Question 10

In which way do men and women differ most, on the average?

Answer 10

White matter (axons)