Hemispheric Specialization Module Map

Purpose  To explain how research on split-brain patients has helped us understand the special abilities of the two halves of the brain.

Summary  The module begins with an explanation and graphic simulation of the way in which information is carried from the main sensory channels to the cerebral hemispheres. Then the responses of a split-brain patient are simulated (based on research by Sperry and Gazzaniga) to show that, for most right handers, the main language center is located in the left hemisphere, while the right hemisphere excels at spatial tasks such as assembling blocks to match a pattern. The same experiments are simulated with a normal subject to explain the functioning of the intact corpus callosum.

The hemispheres
Tactile (haptic) pathway
Auditory pathway
Visual pathway
Divided retina
Split-brain patient
Tactile experiment
Language specialization
Visual experiment
Comparison with normals
Callosal transfer
Right hemisphere skills
Spatial skills
Summary
References


Click here to open the worksheet that accompanies this module. (Requires Adobe Acrobat Reader. Click here to get Adobe Acrobat Reader. Internet connection required to download plug-in.)