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. Author manuscript; available in PMC: 2009 Jun 8.
Published in final edited form as: Neuroimage. 2005 Nov 21;29(2):368–382. doi: 10.1016/j.neuroimage.2005.08.065

Table 2.

Here, we present the zero lag correlation (Pearson’s) coefficients for the three comparisons

Subject HbO:1/BOLD HbT:1/BOLD HbR:1/BOLD
A 0.88 (2 × 10−10) 0.81 (7 × 10−08) 0.93 (4 × 10−14)
B 0.50 (5 × 10−03) 0.32 (9 × 10−02) 0.90 (7 × 10−12)
C 0.57 (1 × 10−03) 0.47 (9 × 10−03) 0.94 (3 × 10−14)
D 0.87 (4 × 10−10) 0.74 (3 × 10−06) 0.94 (1 × 10−14)
E 0.71 (1 × 10−05) 0.62 (3 × 10−04) 0.64 (1 × 10−04)
All 0.71 (1 × 10−05) 0.53 (2 × 10−03) 0.98 (8 × 10−21)

The values in parenthesis are the P values for each coefficient. For all five individual subjects, the BOLD response showed highly significant (P < 10−4) correlation. Only one of the five subjects did not show the best correlation to be between BOLD and the HbR response. The correlations for the averaged response are presented in the bottom row. The HbR:BOLD correlation was again highly significant (P < 8 × 10−21). The time period from 0– 15 s post-stimulus was used for all correlations.