Stimulus amp. (V) 0.5 0.7 1.0 1.2 1.5 Ave. Std. dev.
VT1 x(μm)
        y (μm)
        z (μm)		 -20.04
0.85
0.00		 -22.10
0.82
0.00		 -25.11
0.10
0.00		 -22.45
-1.03
0.00		 -17.68
-0.56
-6.48		 -21.48
0.04
-1.29		 2.78
0.83
2.90
(μm) 20.06 22.12 25.11 22.47 18.84 21.52 =4.10
VT2 x(μm)
        y (μm)
        z (μm)		 -17.21
17.85
-36.38		 -21.12
6.45
22.86		 -24.57
-1.14
0.00		 -16.74
-10.91
0.00		 -11.33
-9.21
0.00		 -18.19
0.61
-2.70		 4.99
11.87
21.27
(μm) 44.03 31.78 24.59 19.98 14.59 18.40 =24.86
Table 1: Estimated source locations based on data acquired for VT1 and VT2 at different stimulation amplitudes. Estimated source location error, ", is defined in Eq. (11), with the true source located at the origin, rt:=[0, 0, 0]T. The last two columns show the average estimated source location and its standard deviation, respectively, across all stimulation amplitudes. The standard radius, _, was calculated using Eq. (12).