Neuroimaging lec 1

Question 1

Structural imaging

Answer 1

Visualizing brain and anatomical properties:
CT
MRI, DTI, VBM, MRS,

Question 2

Functional imaging

Answer 2

Identification of brain activity and brain functioning
fMRI
PET
EEG, ERP
MEG

Question 3

Comparing imaging methods

Answer 3

Spatial resolution (sharpness of the image)
Temporal resolution (speed of recording)

Question 4

Sagittal slice

Answer 4

Vertical slice through middle of portret face

Question 5

Transverse slice

Answer 5

Horizontal oval slice (from top)

Question 6

Coronal slice

Answer 6

Vertical from ear to ear

Question 7

CT (computed tomography)

Answer 7

relatively high resolution
Able to produce different slices in angles
Able to identify abnormalities in the brain (hemorrhage, lesion, tumor etc)

Question 8

MRI (magnetic resonance imaging)

Answer 8

High resolution
Clearer images of soft tissue compared to CT, able to distinguish between grey and white matter
Able to identify abnormalities in the brain (hemorrhage, lesion, tumor etc)

Question 9

fMRI (functional MRI)

Answer 9

Uses MRI scanner
Registers moments of activity of the magnetic protons in the body
Increased activity in a certain area in the brain is associated with increased blood supply in these areas
Measures ratio between oxygen rich and oxygen poor hemoglobin, = blood oxygenation level dependent response (BOLD)

Question 10

EEG (Electroencephalography)

Answer 10

High temporal resolution

Measures the electrical activity generated in the brain cells