1. The Brain Tools of Discovery Older Brain Structures The Limbic System
The Cerebral Cortex

2. Name
How does it work?
Electroencephalogram
(EEG)
Electrodes placed on the scalp measure electrical activity in neurons
Magnetoencephalography
(MEG)
A head coil records magnetic fields from the brain’s natural electrical currents
Computed tomography
(CT)
X-rays of the head generate images that may locate brain damage
Positron emission tomography
(PET)
Tracks where a temporarily radioactive form of glucose goes while the brain of the person given it performs a given task
Magnetic resonance imaging
(MRI)
People sit or lie down in a chamber that uses magnetic fields and radio waves to provide a map of brain structure
Funtional magnetic resonance
imaging (fMRI)
Measures bloodflow to brain regions by comparing continuous MRI scans