Split-Brain Patients

In "split-brain" patients the corpus callosum (which is the most important route among the two cerebral hemispheres of the brain) is surgically cut to improve very severy epilepsy (Pinto et al., 2017). It was found in this study that patients who lacked a corpus callosum had the ability to make the right answers to cues everywhere in the visual field. The conclusion based on a large sample of tasks is that disconnection does not result in two conscious persons in a single brain.

Reference

Pinto, Y, Neville, D.A, Otten, M, Corballis, P.M. Lamme, V.A., De Haan, E.H. et al. (2017).