Table 1.

Modeled electric field strength for different transcranial electrical current stimulation intensities and frequencies

Frequency (Hz)Intensity (mA)
0.5 mA (V/m)0.75 mA (V/m)1 mA (V/m)1.5 mA (V/m)
100 Hz0.71.62.23.2
150 Hz0.81.523.1
200 Hz1.11.52.23.1
250 Hz11.62.23
300 Hz11.62.13
350 HZ11.52.13
400 Hz11.52.13
450 Hz11.52.23
500 Hz11.52.23
  • The modeling shows that that all stimulation frequencies were transmitted to the brain and that the current applied is strong enough to reach the cortex (scaling quasi-linearly with tRNS intensity).