neuroimaging
(noor‵ō-im'ă-jing 
)
[neuro- + imaging]
The visual or graphic representation of the anatomy, blood flow, electrical activity, metabolism, oxygen usage, receptor sites, or other physiological functions of the central nervous system.
functional n.Radiologic identification of any physiological process in the brain, such as its blood flow, electrical activity, metabolism, or oxygen or water uptake.