Hemisphere lateralisation and split brain research

• Who conducted the key study on split brain research and when was it conducted?

  Sperry in 1968
• What is the APFC for the split brain study?(Aim)

  Aim: to investigate hemispheric lateralisation in split brain patients
• What is the APFC for the split brain study? (procedure)

  --

  Procedure:

  • he used a quasi experiment in a lab to compare the performance of these p's on various tasks with people without split brains
  • images or words presented to left or right visual field
  • P had one eye covered and was instructed to look at a fixed center point on a projection screen, which were presented fast to prevent p's eye moving
  • Below the screen was a gap for the P to reach a physical object without seeing their hands.
  • Ps were flashed images and asked to respond verbally or non-verbally
• What is the backstory of the P's used in the split brain patient study?

  --

  11 split brain patients had their corpus callosum cut out because of a history of epilepsy
• What does the corpus callosum do?


  immediately shares information between both hemispheres of the brain, giving a complete picture
• What is the APFC for the split brain study? (findings)

  • when a picture was shown in the right visual field, they could describe it in words.
  • if shown to the left visual field, they could not describe it in words and reported they saw nothing.
  • when a picture was shown to the left visual field, P could touch the object they saw with their left hand but could not verbally say what they saw.
• What is the APFC for the split brain study? (conclusion)

  The study supports argument of lateralisation of function. His study also found out that the right hemisphere of the brain is dominant in drawing abilities and facial recognition.