Table 1.

Four different test conditions were designed with constant 50 Hz AC EF strengths of 1, 2, 3, or 4 kV/m (rms values) and varying DC EF strengths of 1, 2, 4, 8, or 16 kV/m. Total EF strengths were calculated by $\sqrt{E_{\text{DC}}^2+E_{\text{AC}}^2}$. Each test condition consisted of two sessions with 20 exposure trials and 20 sham trials, respectively, whereby trial sequence differed in the second presentation.

	AC EF strength (kV/m)	DC EF strength (kV/m)	Total EF strength (kV/m)
Condition 1	1	1, 2, 4, 8, or 16	1.41, 2.24, 4.12, 8.06, or 16.03
Condition 2	2	1, 2, 4, 8, or 16	2.24, 2.83, 4.47, 8.25, or 16.12
Condition 3	3	1, 2, 4, 8, or 16	3.16, 3.61, 5.00, 8.54, or 16.28
Condition 4	4	1, 2, 4, 8, or 16	4.12, 4.47, 5.66, 8.94, or 16.49