Blood-Pressure Recorder, 1859, from Etienne-Jules Marey. "La Methode Graphique dans les Sciences Experimentales et particulierement en Physiologie et en Medicine." G. Masson. Paris. 1878. p. 167. fig. 52

Bernard Dionysius Geoghegan is a media theorist and historian of technology. He works as an assistant professor (Wissenchaftlicher Mitarbeiter) at the Institut für Kulturwissenschaft at the Humboldt-Universität zu Berlin, as part of a program funded by the German Research Foundation. He is spending the winter semester 2014-2015 as a fellow at the Internationale Kolleg für Kulturtechnik-forschung und Medienphilosophie. In 2012 he received a binational Ph.D. (cotutelle) degree from the Fakultät Medien of Bauhaus-Universität Weimar and the Screen Cultures program of Northwestern University. His research interests include digital media, visual culture studies, software studies, and theotechnics. Bernard has held posts and fellowships at the American University of Paris, Harvard University, MIT, the Pompidou Center, Northwestern University, and the Children's Media Project. His essays appear in journals including Critical Inquiry, The IEEE Annals on the History of Computing, Theory, Culture & Society, and Interaction Studies. He may be found online at Twitter, iTunes, or Google+ and reached by email at bernard.geoghegan@hu-berlin.de. His CV is available here.