Lateralisation

• What are the two hemispheres of the brain?

  Right and left hemispheres
• What function is dominant in the left hemisphere?

  Language and speech
• What function is dominant in the right hemisphere?

  Spatial tasks and emotion
• What connects the two hemispheres of the brain?

  The corpus callosum
• How does each hemisphere process information from the body?

  Each hemisphere deals with opposite body sides
• Where does information from the right visual field go?

  To the visual cortex in the left hemisphere
• Where does information from the left visual field go?

  To the visual cortex in the right hemisphere
• What is the significance of lateralisation research?

  • Studies the different roles of brain hemispheres
  • Uses split-brain surgery patients for insights
• Who conducted a key study on lateralisation?

  Sperry
• What was the procedure in Sperry's study?

  • Combination of case studies and experiments
  • Involved patients who had split-brain surgery
• Why did patients undergo split-brain surgery in Sperry's study?

  To treat epilepsy unresponsive to medication
• What was the control group in Sperry's study?

  No hemisphere disconnection
• What was one experiment conducted in Sperry's study?

  • One eye was covered
  • Participants looked at a fixed point on a projection screen
• What were the results for the right visual field in Sperry's study?

  All participants could say what it was
• What were the results for the left visual field in Sperry's study?

  No participants could say what it was
• How could participants respond to objects in the left visual field?

  They could select a corresponding object with their left hand
• Which hemisphere is responsible for the left hand's actions in Sperry's study?

  The right hemisphere
• What conclusions can be drawn from Sperry's study on lateralisation?

  • Each hemisphere has specialized functions
  • Language is primarily in the left hemisphere
  • Spatial tasks are managed by the right hemisphere