Elseiver: A friendly critique of neuropsychology: facing the challenges of our future by Ronald M Ruff
Neurology, psychiatry, and neuroscience have a common origin. Dr. Martin describes the history of the evolution of the fields. Here’s an illustration of the separate of disciplines from the paper, which is available for free at the source below.
The American Journal of Psychiatry: The Integration of Neurology, Psychiatry, and Neuroscience in the 21st Century by Joseph B. Martin, M.D., Ph.D.