Johanson - biological explanation

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  • Johanson (biological explanation)
    • to find out if abnormalities in brain function is associated with phobias
    • 16 women suffering with arachnophobia
    • participants given radioactively labelled oxygen and then were shown images of spiders while having a PET scan
    • 8 responded with severe panic at sight of spider
      • had reduced blood flow to the right frontal lobe
    • other 8 shown some fear but controlled it successfully
      • had increased blood flow to the right frontal lobe


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