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Table 1 Average SNR values of potentials resulting from all tangential dipoles. The SNR is defined as the root mean square (RMS) value of the simulated signal across all 50 electrode sites by the RMS simulated noise level. SNR values resulting from radial dipoles are slightly (~5%) lower (not shown here).

From: Effects of dipole position, orientation and noise on the accuracy of EEG source localization

RMS Noise (μV) Average SNR
0.035 40
0.052 25
0.087 18
0.180 8
0.430 4
0.870 2