"when EA turns her head to the right, she explained that the months on the left of the calendar become "fuzzy", and she struggled to remember what happened during those months. The opposite is true when she looks to the left. "In this case, Ramachandran suggests that EA's access to her memories are influenced by the movements of her neck and eyes. "While both these cases are incredibly unique, they could teach us a lot about how all of our brains perceive time. "It's possible that when humans evolved the ability to deal with time and numbers, our brains didn't have the capacity to evolve a separate area to deal with this, so it could have ended up packed into the same area that controls our visual cortex. "'Given the opportunistic nature of evolution, perhaps the most convenient way to represent the abstract idea of sequences of numbers and time might have been to map them onto a preexisting map of visual space, already present in the brain,' said Ramachandran. "This idea is backed up by the fact that brain scans have shown connections between the areas of the brain involved in processing numbers, and those involved with mapping the world around us. For example, blind people can 'repurpose' their visual cortices to make mathematical calculations."