Question

which technique records the bold signal?
mri
fmri
ct
pet

Explanation:

fMRI (functional Magnetic - Resonance Imaging) is based on the BOLD (Blood - Oxygen - Level Dependent) effect. It measures changes in blood oxygenation and flow that occur in response to neural activity in the brain. MRI only provides anatomical images, CT uses X - rays to create cross - sectional images, and PET uses radioactive tracers to visualize metabolic processes.

Answer:

B. fMRI