Figure 13. Evaluation of electromagnetic field of a subject participating in two-hand tapping at rest and at 2 Hz without a shielded helmet.

Fourier transformed data evaluating two-hand tapping and rest without use of a shielded helmet while sensors were placed 18 cm away from the subject

Panel A: rest (no helmet used in testing); Panel B: two-hand tapping at 2 Hz (no helmet used in testing)

Abbreviations: Hz, Hertz; V/rtHz, voltage divided by square root of Hertz; cm, centimeters