The results of the experiments regarding the effects of noise on location bias. (a) Results of point-source reconstruction from sLORETA and (b) those from the lead-field normalized minimum-variance filter. The point source is located at (0, −1.5, −6) cm. The contour plots from top to bottom, respectively, show the results for the input SNR α equal to 8M, 4M, and M. The cross mark × indicates the source location. Each contour map is normalized by its maximum value and contains the same number of contour lines.