| Term | Definition |
|
lesions |
percise destruction of brain cells |
|
CAT |
creates a computerized image using x-rays passed through the brain to show structure and/or extent of lesion |
|
MRI |
uses magnetic field and pulses of radio waves that cause emission of signals |
|
EEG |
electrodes positioned on the scalp transmit signals about the brain's electrical activity |
|
evoked potential |
EEGs resulting from a response to a specific stimulus |
|
PET |
ahows brain activity when radioactivly tagged glucose rushed to active neurons and emits positrons |
|
fMRI |
brain activity (resolution higher that PET) when changes in oxygen concentration near active neurons alter magnetic qualities |