A Level Psychology OCR Practice Exam

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What did the tasks in the Sperry et al (1968) study investigate?

  1. How memory is improved through brain stimulation

  2. How the left and right hemispheres respond to input from different visual fields

  3. How emotions affect cognitive tasks

  4. How different age groups process visual stimuli

The correct answer is: How the left and right hemispheres respond to input from different visual fields

The tasks in the Sperry et al. (1968) study investigated how the left and right hemispheres of the brain respond to input from different visual fields, particularly in individuals who had undergone split-brain surgery. This research focused on the functional specialization of each hemisphere. In patients with a severed corpus callosum, visual information presented to one hemisphere could not be easily transferred to the other. For instance, objects shown to the right visual field could be verbally identified because they are processed by the left hemisphere, which is responsible for language. Conversely, objects shown to the left visual field could not be verbalized since they are processed by the right hemisphere, which does not have the same language capabilities. The findings from this study provided significant insights into lateralization of brain function, demonstrating distinct roles for each hemisphere in processing different types of information.

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