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Studying the Brain

Studying the anatomy or structure of the brain is relatively easy. Studying brain functioning is actually quite difficult.


EEG
  • Electroencephalogram
  • Measures brain activity through electrical impulses
  • Electrodes are placed on the scalp, typically using a brain cap
  • Brain activity shows up as lines measuring each area of brain
  • It is important to remain as still as possible during testing as EEGs can pick up the slightest of movements, such as eye blinks and jaw tension








Photo by Thuglas / Public Domain


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Photo by Hgamboa / CC BY

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CAT (or CT)

Photo by Wwwanglia/ CC BY


Computerized Axial Tomography

Computer processing allows neurologists to create cross-sectional imaging using several X-Ray images

Provides images inside the brain without cutting

Does not show brain activity - only structure



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PET

Positron Emission Tomography

Uses a form of radioactive sugar to creates images that evaluate biological functions of cells

PET scan images show bright spots where higher levels of chemical activity is present

Photo by 7mike5000/ Public Domain

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MRI


Magnetic Resonance Imaging

Uses powerful magnets to make detailed images of the inside of your brain

Does not show brain activity - only structure











Photo by Jmarchn / CC BY

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fMRI



Functional Magnetic Resonance Imaging

Assesses brain activity by measuring blood flow in the brain






Photo by 7mike5000/ Public Domain


Practice: Studying the Brain

An EEG measures the relationship between brain and behaviour using: