A total of 63 subjects participated in this study: 49 with and 14 without self-reported electrosensitivity. Each subject took part in one experimental session composed of 10 sham exposure and 10 exposure blocks à 2 minutes (40 minutes in total) in a randomized sequence.
|Chamber||acoustic chamber attenuating noise from endogenous and exogenous sources and external electric and magnetic fields|
|Setup||an exposure cubicle was built of wood; two 60 x 140 cm sheets of conductive wallpaper were attached on the left and right side of the frame; coil for magnet field (30 cm diameter, 240 windings) was installed above the subject's head; the frame, including the coil and wallpaper, was wrapped with non-conductive linen; exposure cubicle was furnished with an adjustable chair; electric field and magnetic field were in phase|
|Sham exposure||A sham exposure was conducted.|
A significant number of subjects (7 out of 63) showed a statistically significant number of correct answers in the perception test.
For this result, it was not relevant if the subjects had a self-reported electrosensitivity. Moreover, there were no crucial differences in the types and amount of reported symptoms between subjects with a statistically significant perception result and those without.
The authors conclude that a magnetic and electric field (50 Hz) could be perceived by a small group of humans independently from electrosensitivity phenomena.