Figure 1.

(A) Taped safety glasses used in the experiment. (B) A diagram of how looking to the left allowed vision primarily out of the LVF and looking to the right allowed vision primarily out of the RVF. (1) Nasal retina; (2) optic nerve; (3) optic chiasm; and (4) occipital cortex. The diagram shows how the medial retina receives light from the lateral visual field and transfers information to the contralateral hemisphere. These neurological facts were used extensively in the split-brain studies, and we assume that the personality changes described here and in our other publications use a similar mechanism (26).