Question

6 across: which imagining technique produces images representing the increase in oxygen flow in the blood to active areas of the brain? (abbreviation only)

Explanation:

fMRI (functional - magnetic resonance imaging) detects changes associated with blood - oxygenation levels in active brain areas. When a part of the brain is more active, there is an increase in oxygen flow to that area, and fMRI can image these changes.

Answer:

fMRI