Neuroimaging either directly or indirectly image the structure, function, or pharmacology of the brain.
Structural imaging and functional imaging.
Structural imaging- structure of the brain and the diagnosis of large-scale intracranial disease (such as a tumor), as well as injury.
Functional imaging- diagnose metabolic diseases and lesions on a finer scale (such as Alzheimer's disease), and also for neurological and cognitive-psychology research.
Allows the brain's information processing to be visualized directly.
EEG shows brain activity (alertness or drowsiness)
PET scans show brain processes by using the sugar glucose in the brain.
MRI scans echo waves to discriminate among grey matter, white matter, and cerebrospinal fluid.
Functional MRI scans measure brain function via a computer's combination of multiple images taken less than a second apart.