Neuroimaging Scans and Techniques.......

1. The Best Of

3. Structural scans: Showing what the brain “looks like.”

4. CAT/CT – Computerized Axial Tomography
http://www.postmortemstudiorental.com/images/x-ray/cat%20scan%20brain%209.JPG
http://neurocog.psy.tufts.edu/images/cat_scan.gif
Computers combine many X-ray
images

5. MRI – Magnetic Resonance Imaging
Computers measure magnetic
fields given off by various
structures.
http://pharyngula.org/images/aspm-mri.jpg
http://gamma.wustl.edu/pt089mr413.gif

6. Functional scans: Showing how the brain “acts.”

7. PET – Positron Emission Tomography
Measures and images
brain activity by
using subatomic
particles and
“guessing” where
they’re going to go
next. Uses
radioactive glucose
to chart activity.
Often looks at
tumors.
http://www.mssm.edu/psychiatry/images/petimg.gif

8. EEG - Electroencephalogram
Measures and images electrical
discharges in the brain.
http://www.bsp.brain.riken.jp/Photos/EEG%20Acquisition%20-%20%2064-QuickCap%
http://www.ant-software.nl/images/eeg-pain_small.gif

9. fMRI – functional MRI
Measures and images the brain
using repeated MRIs paired with
radioactive chemicals, then
“guesses” the brain’s activity
using computer models.
This is what “tapping an
index finger” looks like
on an fMRI.

10. fMRI – functional MRI
Measures and images the brain
using repeated MRIs paired with
radioactive chemicals, then
“guesses” the brain’s activity
using computer models.