Using the resources of the UCLA Brain Mapping Center, this film illustrates the development of neuroscience from its classical reliance on information from brain injuries and autopsies through the new insights discovered with electronic microscopes, EEG equipment, PET scans and MRI machines. Examples of current research that utilize these tools are presented including a study on the role of mirror neurons in autism and the mapping of a woman's several language centers before surgery for a brain tumor. Animations and graphics review the gross anatomy of the brain and the actions of its neurons.