Table 1. Mean and standard deviation of R² and MSE for the estimation of the HRF for signals with low and high Mayer wave power. P-values obtained from a paired t-test which compares R² and MSE at low and high Mayer wave powers in the HbO signal are also presented. The results are obtained from the estimation without short separation regression.

Mean ± std	Low Mayer power	High Mayer power	p value
R2	0.93 ± 0.05	0.78 ± 0.15	<0.001
MSE	0.02 ± 0.01	0.06 ± 0.07	<0.001