In Wedensky s laboratory, and at the same time as Charles S . Sherrington ( 1857-1952 ), Beritashvili used the string galvanometer to study the central coordination of spinal reflexes in the registration of action currents of antagonist muscles.
12.
Three other professors received the Nobel Prize for their research performed at Universiteit Leiden : Hendrik Antoon Lorentz and Pieter Zeeman received the Nobel Prize for their pioneering work in the field of optical and electronic phenomena, and the physiologist Willem Einthoven for his invention of the string galvanometer, which among other things, enabled the development of electrocardiography.
13.
At the recommendation of Wedensky, Beritashvili left for Kazan in autumn 1911 to work with Prof . A . P . Samoilov ( 1867 1930 ) to master the method of registering electric currents in nerves and muscles by the string galvanometer that, in turn, Samoilov had learned from Willem Einthoven ( 1860 1927 ) in Leiden in 1904.
14.
The "'string galvanometer "', also known as the "'Einthoven galvanometer "', invented around 1901 by Dutch physician Willem Einthoven was the first practical electrocardiograph ( ECG ); it was one of the earliest instruments capable of detecting and recording the very small electric currents produced by the human heart and produced the first reliable electrocardiograms.
