Complex sentence: The Mathison meter was based on the Wheatstone bridge invented in 1833; the first electrodermal activity meter was developed in 1889 by Ivane Tarkhnishvili and popularized by Carl Gustav Jung in a series of papers published in 1904.
Split into simpler sentences: The Mathison meter was based on the Wheatstone bridge invented in 1833. Earlier electrodermal activity meters used by Ivane Tarkhnishvili in 1889 and popularized by Carl Gustav Jung in a series of papers published in 1904.