A couple of points for accuracy - the corpus callosum isn't the only path of communication between the two hemispheres of the brain. There are at least two mino

A couple of points for accuracy - the corpus callosum isn't the only path of communication between the two hemispheres of the brain. There are at least two minor pathways, unfortunately I can't remember either of their names well enough to find them and my neurology books are at home. The corpus callosum is by far the biggest pathway of communication, but studies where it has been split have shown that the minor pathways are also used for some communication. And... while the left hemisphere of the brain controls the right side of the body and vice versa, the eyes are a bit different. When you show something to one eye, the signals from the left side of the eye's visual field are sent to the right side of the brain, and the right side of the visual field _of the same eye_ are sent to the left hemisphere. This makes studying people who've had the CC severed very awkward as you have to present images to one side of their visual field and then remove it before their eyes have moved to see the image with the whole field. In turn, this affects which images you can show as they have to be simple enough to be understood quickly enough that you only have to show them for a very limited time. Again, this is something I'd need to look up in my old university notes or textbooks but I have a feeling it was something like 22ms - it could well have been a bit longer, but it's a very, very short time. I too love neurology and studied Experimental Psychology at university, now a bundle of years ago, and we covered a chunk of neurology in that. One of my lecturers, Alan Parkin, had studied people with split brain and some with alien hand syndrome. His books are well worth a read if you're interested in neuropsychology, but you might find them a bit heavy if you haven't already read around psychology, they're made for 2nd-3rd year undergraduate students.