sentences:  The patients would draw what they had seen in their left visual field, but when asked what they had drawn would describe what had been shown to their right visual field.These tests proved that when the corpus callosum is severed, it breaks the connection between the left and right hemispheres, making them unable to communicate with each other.Not only are they unable to communicate with each other, but also without the corpus callosum connecting them one hemisphere has no idea that the other hemisphere even exists.