To study the perception threshold of extremely low frequency electromagnetic fields in 1,071 individuals (349 men and 359 women aging 16 to 60 years, 117 girls and 123 boys aging 9 to 16 years, and 123 individuals older than 60 years).
The survey discusses the results of author's previous research (see "related articels" et al.).
|Exposure 1: 50 Hz||
|Exposure duration||current linearly increased until perception of current|
|Setup||electrodes on both forearms of the test persons|
|current density||9.9 µA/cm²||minimum||calculated||-||for women|
|current density||209 µA/cm²||maximum||calculated||-||for women|
|current density||43.7 µA/cm²||minimum||calculated||-||for men|
|current density||248 µA/cm²||maximum||calculated||-||for men|
|current density||14.4 µA/cm²||minimum||calculated||-||for children|
|current density||187 µA/cm²||maximum||calculated||-||for children|
|cf. remarks||-||-||-||-||current: 15 µA min. value|
Women were found to be significantly more sensitive than men. Children turned out to be more sensitive than men but similar to women. An analysis of the age dependence showed that both boys and girls were similarly sensitive to electric currents at ages 9 to 11 years. The data indicate that existing safety limit values for touch currents need critical review.
Numerical simulations confirmed that the basic limit values of intracorporal electric current densities as recommended by ICNIRP are conservative to prevent cellular excitation.