Sperry

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  • Created by: emma
  • Created on: 25-03-14 22:40
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  • Sperry
    • Aim
      • Study psychological effects of hemispheric disconnection in split brain patients
      • understand the function of left and right brain hemispheres
    • Participants
      • 11 split brain patients
        • 2 patients successfully operated on some time before study 9 only recently undergone surgery
        • to treat epilepsy
      • Control group of people with intact corpus collosum
    • Method
      • Quasi
    • Procedure
      • Used a tachistoscope
        • Allow info to be presented to just one hemisphere at a time
      • Image flashed for 0.1 second on screen
        • Prevent participant moving eyes and see stimulus with both eyes
      • One eye covered and focus their vision on a fixed point
      • Hands screened off
    • Results
      • Participants said they had seen the word case (RVF, LH) would find a key with their left hand (LVF, RH) Had no idea what kind of case they had been shown
        • Rude pic shown to LVF (RH) participant said they saw nothing but showed an appropriate emotional response
    • Conclusion
      • Left hemisphere controls speech, right hemisphere controls object recognition
        • Right hemisphere controls emotion
          • Rude pic shown to LVF (RH) participant said they saw nothing but showed an appropriate emotional response
        • Participants said they had seen the word case (RVF, LH) would find a key with their left hand (LVF, RH) Had no idea what kind of case they had been shown

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