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UNIT 3 : NEUROSCIENCE (Insights on human cognition (Language (Aphasia…

- - - - cerebral angiography
        
        detecting disorders associated with abnormalities in brain arteries
        
        uses special dye & x-rays to see how blood flows through brain
      - computed tomography
        
        tomography-an image slice through an organ without the interference of all layers of tissue present in X-rays
        
        X-rays films appear blurry cause 2D rendition of 3D body
      - Computer Axial Tomography (CAT)
        
        enable 'deblurring' of picture & reconstruction of complete brain image from multiple views
        
        process of imaging brain internal become safer & more precise-3D
        
        less radiation than traditional x-ray
    - - uses magnetic field to take images inside body
        
        based on radio signals emitted by protons in human body
      - advantages
        
        no X-rays / radioactive material used
        
        resolution of images is sharper / clearer than scans
        
        flexibility
      - disadvantages
        
        cannot used in patients with metallic devices
        
        may cause claustrophobic
  - - - Electroencephalography
        
        records electrical activity of brain
        
        detect location & magnitude of brain activity involved
        
        non-invasive & painless procedure
      - Event-Related Potentials (ERPs)
        
        records voltage change around stimulus
    - - Positron Emission Tomography (PET)
        
        measuring cerebral blood flow
      - Functional Magnetic Resonance Imaging (fMRI)
        
        detect changes in magnetic state of blood
        
        determine parts of brain that activated by diff types of physical sensation
- - - - mental disorder characteristically marked by illusions & delusions
    - - Neurological/brain disorder that affect the functioning brain