Janwillem van den Berg

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Janwillem van den Berg (20 November 1920 - 18 October 1985) was a Dutch speech scientist/medical psysicist who did much to prove the myoelastic-aerodynamic theory of voice production.

Van den Berg designed the first implantable pacemaker that could be switched to a higher beat rate for a higher level of activity. The first experiments for an R-top triggered pacemaker were done, and the design of electrodes to the heart was tested in animal experiments. This made Van den Berg known to the cardiologists of that time, and the fourth International Symposium on Cardiac Pacing was organized in Groningen in 1973.

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