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Brain Imaging
| Question | Answer |
|---|---|
| PET | increased blood flow via radioactivity |
| MRI | proton orientations following removal of strong magnetic field |
| fMRI | blood flow: magnetic properties of hemoglobin |
| EEG | via electrodes on the skull, elec. activity of the brain |
| MEG | change in local magnetic field |
| TMS | magnetic field to activiate, deactivate neurons |