WAYS WE STUDY THE BRAIN
Accidents
- Phineas Gage Story: personality changes after accident
Lesions
- removal or destruction of some part of the brain
- another word: frontal lobotomy
Electroencephalogram (EEG)
- detects brain waves through their electrical output
- usually used mainly in sleep research
Computerized Axial Tomography (CAT Scan)
- 3D x - ray of the brain
- good for tumor locating, but tells nothing about function
Magnetic Resonance Imaging (MRI)
- more detailed picture of the brain using a magnetic field to knock electrons off axis
- takes many still pictures and turns pictures into a movie like production
Positron Emission Tomography (PET)
- measures how much of a chemical the brain is using
- usually glucose consumption
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