Epileptic patients present an almost unique opportunity to study the functioning of the hemispheres of the brain when independent from each other.
I am going to investigate the hemispheric functioning of split-brain patients, using the Quasi-method
11 Participants who had their corpus callosum severed to treat severe epilepsy
The tasks involved presenting information to one hemisphere by sending it to only one visual field. They were blindfolded so that only one eye was receiving the information. In other tasks, their hands were screened from them so they could not see objects when placed in front of them. The results participants with interhemispheric disconnection were compared to those with out.
I found that information shown to only one hemisphere will only be recalled if shown to the same hemisphere again.
From Roger Sperry's it was concluded that there is some lateralization of function between the hemispheres.