Research Article

Gradient Artefact Correction and Evaluation of the EEG Recorded Simultaneously with fMRI Data Using Optimised Moving-Average

Table 5

SNR and MSE for some EEG electrodes (GE data), considering application of low-pass filtering in and .

MeasureMethodEEG electrodeFilter cut-off frequency
No LP150 Hz120 Hz100 Hz70 Hz50 Hz

SNROMAFp10.99900.99970.99980.99980.99980.9998
F30.99740.99940.99960.99960.99970.9997
Oz0.99800.99920.99930.99930.99930.9994
CPz0.99680.99920.99940.99950.99960.9997
Fz0.99770.99910.99910.99910.99900.9990
FC50.99580.99890.99900.99900.99900.9989
AF30.99900.99970.99980.99980.99980.9998

SNRAASFp10.99600.99610.99620.99620.99620.9962
F30.99770.99810.99820.99820.99820.9983
Oz0.98610.98610.98610.98610.98610.9861
CPz0.99490.99520.99530.99530.99530.9954
Fz0.99530.99560.99560.99570.99570.9957
FC50.99740.99790.99790.99800.99800.9981
AF30.99690.99710.99710.99710.99710.9971

MSE (µV2)OMAFp18.18522.29731.92571.82251.78431.7917
F33.10400.63760.47700.42070.38280.3740
Oz2.54450.98580.88200.83590.79090.7727
CPz0.72110.16240.12080.10070.08070.0726
Fz0.64690.25370.24480.24930.26210.2703
FC58.67582.21851.97611.94781.99422.0390
AF32.38810.68280.59100.56710.56280.5685

MSE (µV2)AASFp132.288130.875730.525830.338430.133330.0426
F32.71482.17582.08772.04452.00021.9816
Oz18.205017.778617.636417.548517.440117.3874
CPz1.17221.04441.01741.00240.98550.9779
Fz1.36091.23961.21541.20211.18701.1801
FC55.47944.17113.95483.84913.74223.6981
AF37.51647.14157.05437.00596.95106.9259