Deepbrain Apparatus (IMAGE) Stanford University Caption This is a diagram of the experimental setup. (left) Tiny optical instruments called microendoscopes are inserted into glass imaging guide tubes, which maintain a precise position in the brain. This allows researchers to view the exact same neuron with a microscope (right) again and again, a new technique for brain researchers. Scientists can also compare diseased tissue, such as a tumor, to healthy tissue in the same animal. Credit Modified image courtesy Mark Schnitzer and Nature Medicine. Usage Restrictions May not be altered or sold. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.