prosopagnosia

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  • prosopagnosia
    • case studies
      • Busigny (2010), 52 year old woman, PS. damage to occipito and temporaral lobes, inability to recognise faces, but with help of peripheral cues she could.
      • Delvenne (2004) NS aged 40, damage in occipito temporal junction. inability to recognise faces and objects.
      • Bruyer (1983) reported the case of Mr W a farmer who could recongise indivudal sheeps and cows but not people.
    • explanations
      • acquired vs developmental: Duchaine. 2% of the population is affected by developmental pp.
      • damage to a face processing unit: PS had damage to the FFA and OFA which indicated that's where pp underlies.
      • holistic processing failure. farah suggested a continuum. pp results with a failure at the end of the continuum
    • methodological issues- case studies look at unique individuals - cant generalise findings. association doesn't mean cause. difficult to reliably test. however case studies are rich in data
      • ethical issues- privacy and harm to participants
        • IDA- real world application- offers  support knowing other people have prosopagnosia.
    • support for a unique face processor- Garrido et al. evidence challenging: Humphrey and riddoch. hollistic processing failure is not universal in prosopagnosics. supports B&Y model.

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