Peter Coppin is a professor at OCAD university. His research, along with David Steinman at the University of Toronto, uses data visualization in the biomedical area. In the example of blood flow visualization in the biomedical sciences, decades of engineering research have highlighted the central role of disturbed blood flow patterns in the development of treatment of the vascular diseases that cause most heart attacks and strokes, yet this knowledge is still not routinely used by doctors. A problem is the data-driven blood flow visualizations originally developed by engineers for engineers, tend to be rich in superfluous details, whereas recent investigations have suggested that perception of the gross flow structures would be adequate, and perhaps more effective. -- Image credit: Richard Nixon by Edmund S. Valtman ppmsc.07955.jpg