Table II.

Pearson's correlation coefficients between changes in [HHb] and [tHb] as measured by NIRS on the one hand, and changes in maximum BOLD‐fMRI signal (left columns) and changes in interoptode BOLD‐fMRI signal (right columns) on the other, over the left motor cortex area in young and elderly subjects during a 20‐sec contralateral finger‐tapping task

Subject	Δ Maximum BOLD‐fMRI signal		Δ Interoptode BOLD‐fMRI signal
	vs. [HHb]	vs. [tHb]	vs. [HHb]	vs. [tHb]
Young subjects
1	−0.78**	0.83**	−0.89**	0.68**
2	−0.59*	0.94**	−0.59*	0.93**
3	−0.88**	0.78**	−0.58*	0.35
4	−0.63**	0.54*	−0.53*	0.47
5	−0.88**	0.62*	−0.63**	0.23
6	−0.96**	0.74**	−0.96**	0.65**
Mean	−0.79 ± 0.15	0.74 ± 0.14	−0.70 ± 0.18	0.55 ± 0.25
Elderly subjects
1	−0.97**	−0.11	−0.97**	−0.13
2	−0.94**	0.79**	−0.91**	0.58*
3	−0.33	0.31	0.49	−0.49
4	−0.81**	0.69**	−0.72**	0.69**
5	−0.98**	−0.03	−0.93**	−0.21
Mean	−0.81 ± 0.27	0.09 ± 0.52
All subjects (n = 11)
Mean	−0.80 ± 0.20	0.55 ± 0.35	−0.66 ± 0.42	0.34 ± 0.45

Data are presented as mean ± SD.

^* P < 0.05,

^** P < 0.01, Pearson's correlation.