Hemispheric lateralisation

    Cards (20)

    • Who conducted split-brain research on epilepsy patients?
      Sperry
    • What was the treatment for the epilepsy patients in Sperry's research?
      Their corpus callosum was cut
    • How many right-handed epilepsy patients were involved in Sperry's research?
      11
    • What does split-brain research refer to?
      Inability of hemispheres to communicate
    • How was the procedure conducted in Sperry's research?
      An image or word was flashed briefly
    • What was the duration for which the image or word was flashed to the patients?
      One tenth of a second
    • What did patients report when the image was presented to the right visual field?
      They would say what they saw
    • Which hemisphere specializes in speech and language?
      The left hemisphere
    • What did patients report when the image was presented to the left visual field?
      They often reported 'nothing'
    • Why couldn't patients say what they saw when the image was presented to the left visual field?
      It was processed in the right hemisphere
    • What does the ability to draw with the left hand suggest about the patients?
      They can comprehend right hemisphere processing
    • What could patients do when the word or image was presented to the left visual field?
      Select the correct item using their left hand
    • What are the conclusions drawn from Sperry's split-brain research?
      • Left hemisphere: specialized for speech and language
      • Right hemisphere: specialized for visual-spatial processing and face recognition
      • Behavior control relies on hemisphere connectivity
    • Why might the findings of Sperry's research not be useful for humans?
      HL may not be advantageous for brain function
    • What did researchers find about HL in chickens?
      HL allowed them to perform two tasks simultaneously
    • What is a strength of Sperry's research regarding internal validity?
      Use of highly controlled standardised procedures
    • How did Sperry ensure the visual field was activated correctly during the experiment?
      One eye was blindfolded and fixed on a point
    • What was the issue with the sample used in Sperry's research?
      It lacked generalizability due to epilepsy
    • What confounding variable might have influenced Sperry's findings?
      Changes in the brain due to epilepsy
    • What would have been a more appropriate control group for Sperry's research?
      Participants with epilepsy but without split-brain