The statistical results in difference of brain activation for the three comparisons of (a) WCT vs. NW, (b) WMT vs. NW, and (c) WCT vs. WMT.

<p>The <i>t</i> values of significant differences with FDR correction for the multiple comparison in early or late phase are color-coded under the axis for each channel. The averaged dynamics of Hbdiff level for different tasks (green for NW, red for WCT, and blue for WMT) are also displayed at each channel. The horizontal solid lines depict the concentration level of zero, and the vertical solid lines label the time of zero for the task onset.