BOLD fMRI MY Flashcards
1
Q
An advantage of MRI?
A
No radioactivity
2
Q
fMRI=
A
functional magnetic resonance imaging
3
Q
BOLD fMRI
A
B- Blood
O- Oxygen
L- Level
D- Dependent
4
Q
BOLD fMRI works because….
A
blood is magnetic
5
Q
deoxy-haemoglobin ______ MR signal a lot
A
decreases
6
Q
Oxy-haemoglobin _______ MR signal a bit
A
increases
7
Q
the amount of deoxy-haemoglobin decreases when the brain becomes more active because…
A
the flow has increased so much
8
Q
The washing away of deoxy-haemoglobin produces an ______ in BOLD fMRI signal, this is known as….
A
- Increase
positive BOLD signal
