Imagining technics

Question 1

Different brain mapping techniques

Answer 1

X ray 
EEG
PET
MRI
MEG
Transcranial doppler (ultrasound)

Question 2

lesion studies

Answer 2

MR & CT

Question 3

Imaging Brain structure

Answer 3

Postmortem or MRI in living

Question 4

Measures/manipulation of electrical activity

Answer 4

EEG, ERP, MEG.

Question 5

measures of Cerebral Blood Flow

Answer 5

PET, MR, Doppler

Question 6

measures of metabolism

Answer 6

PET, MR, Spectroscopy

Question 7

measures of level of oxygenated OxyHb/ deoxygenated DeoxyHb

Answer 7

fMRI

Question 8

Quantitative anatomical brain data can be combined with

measures of “function”

Answer 8

Cognitive functions
psychological characteristics
motor abilities
sensor abilities

Question 9

What are lesions studies

Answer 9

Examine the effect of a damage to a certain region of the brain.

Question 10

What is the biological basis of the BOLD signal

Answer 10

coupling between neuronal activity and local blood flow.
Increased neuronal
stimulation leads to a local increase in blood flow. Brain activity leads to increased blood flow to certain parts of the brain

BOLD is a MRI technique sensitive to local differences in oxygenate hemoglobin versus deoxygenatedhemoglobin

Question 11

Oxygenated Hb

Answer 11

Is diamagnetic.

Does not influence the magnetic field

Question 12

Deoxygenated Hb

Answer 12

is Paramagnetic

disturbs the magnetic field, leading to signal loss

Question 13

GOAL of fMRI research

Answer 13

• To design an experiment that isolates different cognitive operations and their success