3.3 End Of Module Quiz Flashcards
Which of these is the first step in using the ontogenetic technique?
A) inject a radioactive chemical into the blood
B) insert an electrode into the brain
C) subject the brain to a strong magnetic field
D) attach light-sensitive proteins to a virus
D) attach light-sensitive proteins to a virus
Which of the following is a method to inactivate a brain area temporarily?
A) stereotactic instrument
B) transcranial magnetic stimulation
C) lesion
D) ablation
B) transcranial magnetic stimulation
Which of these is the first step for positron-emission tomography (PET)?
A) inject a radioactive chemical into the blood
B) insert an electrode into the brain
C) subject the brain to a strong magnetic field
D) attach light-sensitive proteins to a virus
A) inject a radioactive chemical into the blood
What is one advantage of fMRI over PET scans?
A) the fMRI technique measures activity on a millisecond-by-millisecond basis
B) the fMRI technique does not require inserting an electrode into the head
C) the fMRI technique technique does not expose the brain to radioactivity
D) the fMRI technique identifies which brain areas are most active at a given moment
C) the fMRI technique technique does not expose the brain to radioactivity
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?
A) test whether the fMRI recordings are stronger on people who enjoy music more than others do
B) test whether this brain area becomes silent when someone is not listening to music
C) examine the size of this brain area in nonhuman animals
D) test whether we can use fMRI recordings to guess what kind of music someone is hearing
D) test whether we can use fMRI recordings to guess what kind of music someone is hearing
Which of these methods measures brain anatomy but NOT brain activity?
A) EEG
B) PET
C) MRI
D) fMRI
C) MRI
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?
A) only MRI measures responses of brain chemicals to a magnetic field. Both show which brain areas are most active at the moment
B) only fMRI measures responses of brain chemicals to a magnetic field. Only MRI shows which brain areas are most active at the moment
C) both measure responses of brain chemicals to a magnetic field. Only fMRI shows which brain areas are most active at the moment
D) both measure responses of brain chemicals to a magnetic field. Both show which areas are most active at the moment.
C) both measure responses of brain chemicals to a magnetic field. Only fMRI shows which brain areas are most active at the moment
In which regard, if either, do human brains exceed those of all other species?
A) humans have the largest brains in total mass
B) humans have the largest brain-to-body ratio
C) humans do not exceed all other species in either regard
C) humans do not exceed all other species in either regard
Most studies using modern methods show a moderate positive correlation between brain size and IQ scores. Nevertheless, interpreting these results is problematic. Why?
A) as children grow older, their brain size increases but their IQ decreases
B) when people are sleepy or sick their brain size remains the same but their IQ performance drops
C) on average, men have larger brains than women, but equal IQ’s
D) some parts of the brain are more important for IQ than other parts are
C) on average, men have larger brains than women, but equal IQ’s
In which way do men and women differ most, on the average?
A) intellectual performance
B) gray matter (neuron cell bodies)
C) white matter (axons)
C) white matter (axons)
