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MRI anf FMRI
Transcript of MRI anf FMRI
Resonance Imagery MRI- studies brain anatomy (BOLD)- Blood Oxygen Level Dependent measures neural activity
Increase in neural activity-increase in blood oxygen-increase in fMRI signal FMRI- Studies Brain Functions An MRI is used to find problems like tumors, bleeding, injuries, blood vessel diseases and infections. Commonly used for the brain Used to detect blood flow, emotions, and as a lie detection An MRI uses a big magnet to cause the hydrogen particles to assemble, then they use radio waves to knock the hydrogen nuclei out of place. After they have been scrambled they turn off the radio waves and it will show us the insides based on the time it takes to get back to its original pattern The Limitations are the Cost. The cost depends on what you get a MRI or FMRI on. Work Cited Domain: http://psychcentral.com/lib/2007/what-is-functional-magnetic-resonance-imaging-fmri/ Uses BOLD(Blood Oxygen Level Dependent) http://psychcentral.com/lib/2007/what-is-functional-magnetic-resonance-imaging-fmri/ http://inst.eecs.berkeley.edu/~cs182/sp07/
fmri/.../Week6_BOLD_fMRI.ppt Who: Hannah Devlin
What: To inform
When: Last Reviewed July 6, 2012
Where: Department of Clinical Neurology, University of Oxford
Why: To inform others about MRI and fMRI You should warn your doctor before getting an MRI
if you have any metal objects in or on your body. The Risks If you any of these items on you it can severely damage your body because the magnet is so strong.