So far we’ve concentrated on language abilities which usually reside in the left hemisphere
which might make it seem by now like the right hemisphere is just taking up space.
In fact, it was hard for researchers to find any unique abilities associated with the right hemisphere
until the work of Roger Sperry, who did the first experiments using split-brain patients.
Research has shown that the right hemisphere performs much better than the left hemisphere on spatial tasks
such as recognizing faces or assembling puzzles.
Let’s go back to our right-handed split-brain patient for one last experiment using a simple puzzle.