LONDON (Reuters) - Microscopic imaging techniques have enabled scientists to delve deep into the brain of a living animal to see how visual circuitry works. By combining two imaging methods, researchers at Harvard Medical School in Massachusetts produced time-lapse images that gave them a close-up look at the inner workings of the brain -- an achievement that could improve understanding of complex illnesses like epilepsy, Alzheimer's and Parkinson's disease. "Put simply, this technique allows us to see the brain seeing," R. Clay Reid, professor of neurobiology and the lead researcher said Wednesday. "It's an entirely new way of looking at...