Table II.

Reproducibility of the detected activation expressed with intraclass correlation coefficients (ICC) based on the second level parameter set (beta weights)

		Single channels		Cluster levela
		ICCSINGLE	ICCAVERAGE	ICCSINGLE	ICCAVERAGE
O2HbOVERALL a	Left	0.45 (0.03–0.72)	0.60 (0.05–0.83)	0.51	0.68
	Right	0.46 (0.01–0.81)	0.60 (0.06–0.89)	0.58	0.73
HHbOVERALL	Left	0.37 (0.00–0.80)	0.51 (0.00–0.89)	0.80	0.89
	Right	0.33 (0.00–0.76)	46 (0.00–0.87)	0.43	0.61
O2HbROI b	Left	0.67 (0.60–76)	0.80 (0.75–0.86)	0.70	0.83
	Right	0.72 (0.58–0.86)	0.83 (0.75–0.92)	0.74	0.85
HHbROI	Left	0.67 (0.38–0.80)	0.78 (0.56–0.89)	0.67	0.80
	Right	0.75 (0.72–0.80)	0.87 (0.84–0.89)	0.77	0.87

^aOverall = mean of the ICCs from all channels.

^bROI = based on channels of the region of interest (compare Fig. 1).