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Table 1 Signal to noise ratio (SNR) gain of 7 channels and 3 tasks

From: Recognizing brain activities by functional near-infrared spectroscope signal analysis

Total-Hb Ch-1 Ch-2 Ch-3 Ch-4 Ch-5 Ch-6 Ch-7
Task 1 2.7073 2.5748 3.1227 2.8987 0.25172 1.263 0.88898
Task 2 4.7043 1.1575 5.2625 2.2889 0.70114 0.75794 1.1248
Task 3 3.0046 2.2346 3.5706 2.9905 0.30904 1.4218 0.91027