Research Article

Realistic and Spherical Head Modeling for EEG Forward Problem Solution: A Comparative Cortex-Based Analysis

Table 2

Summary of the minimum PSF values for the realistic (BEM and FDM) and the sensor-fitted spherical (SPH) models, for sources 1÷26 parallel to and orientations and for the RMS maps.

Min PSF
y RMS
FDMBEMSPHFDMBEMSPHFDMBEMSPHFDMBEMSPH

10.40.120.420.380.130.28 0.160.100.20.340.380.32
20.260.060.30.23 0.030.2900.060.170.250.330.27
30.23 0.030.310.11 0.330.06 0.24 0.22 0.070.150.370.18
40.210.100.230.11 0.170.08 0.26 0.38 0.110.160.370.16
50.27 0.240.30.230.110.16 0.26 0.210.140.270.440.27
60.370.090.390.370.060.24 0.28 0.030.180.360.330.30
70.23 0.080.240.17 0.21−0.02 0.12 0.10 0.110.210.250.15
80.230.080.280.14 0.150.06 0.14 0.06 0.070.230.220.17
90.32 0.060.420.09 0.210.380.02 0.090.090.280.380.33
100.360.160.430.110.100.38 0.22 0.200.130.250.400.34
110.380.080.460.320.080.39 0.090.070.140.310.430.37
120.440.120.440.260.140.38 0.32 0.060.130.280.370.35
130.31 0.090.370.23 0.150.22 0.16 0.100.130.290.320.27
140.330.120.380.23 0.050.23 0.060.050.150.310.300.27
150.350.120.390.310.100.26 0.010.100.190.340.370.30
160.38 0.030.380.330.000.26−0.4 0.110.190.360.370.31
170.310.060.320.27 0.140.28 0.11 0.310.180.310.420.29
180.32 0.080.340.33 0.320.3 0.02 0.030.220.280.410.30
190.40.110.390.310.170.36 0.28 0.110.180.330.390.34
200.340.020.40.29 0.030.360.020.110.140.320.370.35
210.290.140.340.08 0.090.28 0.06 0.050.130.290.280.27
220.3 0.230.350.15 0.260.19 0.08 0.210.120.280.370.28
230.390.060.390.23 0.070.22 0.26 0.040.160.340.290.27
240.340.200.390.32 0.020.18 0.170.040.150.330.250.26
250.24 0.120.390.11 0.180.34 0.01 0.400.050.250.350.30
260.270.170.35−0.050.140.23 0.33 0.3100.210.370.24

Mean0.320.030.360.22 0.050.25 0.15 0.100.110.280.350.28
± SD 0.06 0.12 0.06 0.11 0.15 0.11 0.12 0.15 0.10 0.06 0.06 0.06