ANATOMY
NEURORADIOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
CT
|
|
|
MEG
|
|
|
EEG
|
|
|
PG
|
Detailed explanation-1: -Electroencephalography (EEG) First discovered about a century ago, EEG measures electrical activities of the brain from electrodes placed on the scalp.
Detailed explanation-2: -An EEG measures electrical activities of the brain from hundreds of electrodes placed on the scalp with special glue and/or within a special cap. When neurons generate an action potential or “fire”, they generate an electrical field that is quite powerful.
Detailed explanation-3: -Functional neuroimaging topics For instance, MEG and EEG record the magnetic or electrical fluctuations that occur when a population of neurons is active. These methods are excellent for measuring the time-course of neural events (on the order of milliseconds, ) but generally bad at measuring where those events happen.
Detailed explanation-4: -The two main techniques used in functional brain imaging are positron emission tomography (PET) and functional MRI (fMRI), which measure energy consumption in activated brain regions.