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Research methods - Coggle Diagram

- - - - Used to locates brain structures
    - - A head holder
      - An electrode holder
- - - - Uses infusion of a radio-opaque dye into a cerebral artery to visualise the cerebral circulatory system
      - Most useful for localising vascular damage
      - Displacement of blood vessels can indicate a tumour
- - - - First, active areas of the brain take up more oxygenated blood that they need for their energy requirements
      - Oxygenated blood has magnetic properties that influence the radio-frequency waves emitted by hydrogen atoms in an MRI.
      - Signal recorded is called the BOLD signal
    - - Non-invasive
      - Structural and functional information
      - Better spatial resolution