Table 2.

The group comparisons of SNR in ∆HbO and ∆HbR over different brain regions before and after deconvolution.

	SNR before deconvolution	SNR after deconvolution	t	df	p	Cohen’s d
M1 in ∆HbO
0.2 Hz	727.81 ± 1052.36	51.05 ± 110.39	3.50	28	0.002**	0.92
0.4 Hz	208.68 ± 320.02	25.07 ± 27.38	3.08	28	0.005**	0.82
PMC in ∆HbO
0.2 Hz	1101.99 ± 2465.95	47.69 ± 91.88	2.31	28	0.029*	0.61
0.4 Hz	649.80 ± 1060.95	39.74 ± 67.63	3.13	28	0.004**	0.83
0.6 Hz	1107.43 ± 2962.19	175.07 ± 557.24	2.05	28	0.049*	0.45
SMA in ∆HbO
0.2 Hz	134.88 ± 156.97	32.68 ± 40.66	3.42	28	0.002**	0.91
0.4 Hz	172.81 ± 327.83	49.41 ± 72.44	2.15	28	0.040*	0.53
PFC in ∆HbO
0.6 Hz	11368.34 ± 20586.20	203.96 ± 280.76	2.95	28	0.006**	0.78
M1 in ∆HbR
0.2 Hz	450.74 ± 648.19	15.05 ± 9.34	3.63	28	0.001**	0.97
0.4 Hz	193.98 ± 276.56	42.07 ± 58.15	3.11	28	0.004**	0.77
0.6 Hz	822.75 ± 1464.43	109.49 ± 111.64	2.64	28	0.013*	0.70
PMC in ∆HbR
0.4 Hz	931.75 ± 2380.22	22.34 ± 23.28	2.06	28	0.049*	0.55
0.6 Hz	384.73 ± 594.83	46.47 ± 64.68	3.15	28	0.004**	0.81
SMA in ∆HbR
0.2 Hz	101.64 ± 124.11	18.29 ± 16.23	3.62	28	0.001*	0.96

Group comparisons: paired t-tests. The values are displayed as mean ± SD. SNR, signal-to-noise ratio; M1, primary motor cortex; PMC, premotor cortex; SMA, supplementary motor area; PFC, prefrontal cortex; ∆HbO, changes in concentration of oxygenated hemoglobin; ∆HbR, changes in concentration of de-oxygenated hemoglobin. ^*Indicated significant results for p < 0.05, ^**indicated significant results for p < 0.01.