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. Author manuscript; available in PMC: 2007 Oct 1.
Published in final edited form as: IEEE Trans Biomed Eng. 2006 Oct;53(10):1883–1892. doi: 10.1109/TBME.2006.876620

TABLE 1.

The accuracy (in %) of identification by the IC method with the optimal penalty function C1 for (12) and C4 for (13). The EEG signals under the color noise with pre-whitening are used with Case A of source configuration (Fig. 1(a)): the damped sinusoid sources. The CCs: ρ12, ρ 23, ρ 34 and ρ45 are used from four groups, e.g., (0.42, 0.42, 0.42, 0.42), (0.52, 0.52, 0.52, 0.52), (0.62, 0.62, 0.62, 0.62) and (0.72, 0.72, 0.72, 0.72). In the simulations of (12), the noise information is accuracy. In the simulations of (13), two noise inaccuracy values are considered, e.g., κ = 1% and 7%. NL: Noise level.

Accuracy (%): (12) and C1

NL 5% 10% 20%  

One Dipole 99 99 99  

ρ12, ρ23, ρ34, ρ45 0.42, 0.42, 0.42, 0.42 0.52, 0.52, 0.52, 0.52 0.62, 0.62, 0.62, 0.62 0.72, 0.72, 0.72, 0.72

NL 5% 10% 20% 5% 10% 20% 5% 10% 20% 5% 10% 20%

Two Dipoles 99 99 99 99 99 99 99 99 99 99 99 99
Three Dipoles 99 99 99 99 99 99 99 99 99 99 99 97
Four Dipoles 99 99 98 99 99 93 99 99 79 99 88 51
Five Dipoles 99 97 76 99 85 36 88 49 7 56 8 2
Accuracy (%) : (13), C4 and κ =1%

NL 5% 10% 20%  

One Dipole 100 100 100  

ρ12, ρ23, ρ34, ρ45 0.42, 0.42, 0.42, 0.42 0.52, 0.52, 0.52, 0.52 0.62, 0.62, 0.62, 0.62 0.72, 0.72, 0.72, 0.72

NL 5% 10% 20% 5% 10% 20% 5% 10% 20% 5% 10% 20%

Two Dipoles 100 100 100 100 100 100 100 100 100 100 100 100
Three Dipoles 100 100 96 100 98 94 100 98 90 100 96 77
Four Dipoles 100 98 66 100 85 34 98 66 17 78 27 3
Five Dipoles 94 56 7 69 11 1 20 2 0 3 0 0
Accuracy (%): (13), C4 and κ= 7%

NL 5% 10% 20%  

One Dipole 100 100 100  

ρ12, ρ23, ρ34, ρ45 0.42, 0.42, 0.42, 0.42 0.52, 0.52, 0.52, 0.52 0.62, 0.62, 0.62, 0.62 0.72, 0.72, 0.72, 0.72

NL 5% 10% 20% 5% 10% 20% 5% 10% 20% 5% 10% 20%

Two Dipoles 100 100 100 100 100 100 100 100 100 100 100 100
Three Dipoles 100 99 96 100 99 94 100 98 90 100 97 81
Four Dipoles 100 98 67 100 85 35 98 68 18 79 29 4
Five Dipoles 94 59 8 68 10 1 22 1 0 3 0 0