week 3 research methods

Question 1

contrast xray

Answer 1

adaption of standard xray technique which enables visualisation of the brain
patient receiving xray is injected with radiopaque substance

Question 2

computed tomography

Answer 2

CT scan provides 3D view of brain

Question 3

MRI

Answer 3

greater spatial resolution than CT.
measures waves emitted by hydrogen atoms
provided 2d and 3d images

Question 4

FRMI

Answer 4

detects oxygen consumption of active brain regions

BOLD = blood oxygen level dependent signal

Question 5

EEG scalp electroencephalography

Answer 5

EEG measure of the gross brain electrical activity