Fig. 6.

The grand averaged group time courses of the hemodynamic responses in ${\mathrm{HbO}}_2$ and HHb to the JA and I conditions. Light grayed area indicates the time window, where we found a significant increase of ${\mathrm{HbO}}_2$ compared to baseline for both the JA and I conditions. The dark grayed area indicates the time window, where the difference in ${\mathrm{HbO}}_2$ change was significant between the JA and I conditions. (a) Channel 5, (b) channel 6, (c) channel 8, and (d) channel 9.