Volney Mathison

[4] In 1921, Mathison wrote the fictional short story "A Phony Phone", which was published in Radio News edited by Hugo Gernsback.

[5] In 1924, he wrote the fictional book The Radiobuster: Being Some of the Adventures of Samuel Jones, Deep Sea Wireless Operator.

[1] John Freeman writes in Suppressed and Incredible Inventions, "Recalling my visits at the height of his career, I remember that, while his results were outstanding, he was typically fought by the Medical Profession.

Earlier electrodermal activity meters were used by Ivane Tarkhnishvili in 1889 and popularized by Carl Gustav Jung in a series of papers published in 1904.

[11] Simon Singh and Edzard Ernst write in Trick or Treatment that "The E-meter was also widely used by the Church of Scientology, so much so that many Scientologists believe that it was invented by their founder L. Ron Hubbard.

In an earlier sworn affidavit to the Federal District Court in about 1980, DeWolf stated that Mathison gave Hubbard his rights to the E-meter in 1952.

[13][19] In 1966, Hubbard was awarded a United States patent for a solid-state E-meter, described as a "Device for Measuring and Indicating Changes in Resistance of a Living Body".

[22] Many of Mathison's professional activities and publications — chiropractic,[23][24][25][26] psychoanalysis,[27][28] past life regression,[29] and hypnotherapy[30][31] — have been classed as pseudosciences by various critics.