What were the results of Zaidel's study on commissurotomy patients?

Zaidel's study on commissurotomy patients found that split-brain patients displayed differences in processing visual information across the two hemispheres. Specifically, the left hemisphere tended to specialize in language-related tasks, while the right hemisphere showed strengths in spatial abilities and emotion recognition. This research provided insights into the functional specialization of the two hemispheres of the brain.