The reason that we can rely on fMRI to measure brain activity is because

Question

Quizplus · Accepted Answer

fMRI measures brain activity by detecting changes associated with blood flow. When an area of the brain is more active, it consumes more oxygen, and blood flow to that area increases accordingly. This is based on the principle that cerebral blood flow and neuronal activation are coupled. When an area of the brain is active, it gets more oxygenated blood; this is what fMRI detects, rather than the presence of oxygenated blood only in active regions or hemoglobin being transported out of neurons.

The Reason That We Can Rely on FMRI to Measure