Cerebral Blood Flow MY

Question 1

What percentage is the brain of the body’s mass?

Answer 1

2%

Question 2

How many percent does the brain consume of the body’s energy?

Answer 2

20%

Question 3

What does cognitive neuroscience stand for?

Answer 3

the branch of neuroscience that studies the biological foundations of mental phenomena

Question 4

What are the neuroimaging techniques?

Answer 4

EEG (Electroencephalogram)
PET (Positron Emission Tomography)
MRI (Magnetic Resonance Imaging)

Question 5

How can we measure neural activity?

Answer 5

electro-physiology, using an electrode inserted into a neuron.

Question 6

EEGs produce ________ from each electrode

Answer 6

raw data

Question 7

One strength of EEG

Answer 7

good temporal solution

Question 8

One limitation of EEG

Answer 8

Poor spatial resolution

Question 9

How do PET scans work?

Answer 9

inject radioactive tracers into the blood and see where they end up.

Question 10

What do PET measure?

Answer 10

Cerebral blood flow

Question 11

What does the amount of radioactive water in PET scans in a specific area tell us?

Answer 11

the amount of water in the brain region is proportional to the flow to that region, more radioactivity = more flow

Question 12

Strength of PET scan?

Answer 12

gives you measurements in absolute units

Question 13

Limitation of PET scan?

Answer 13

poor temporal resolution
Poor spatial resolution
Radioactivity means can’t test same subjects too much