Figure 5.

The difference in oxygenated hemoglobin (oxy-Hb) levels, measured in channel 17, between correct- and incorrect-working memory (WM) task in stimulus timing and delay time analyzed using a paired t-test. (A) There was no statistical significant difference in the stimulus timing after the correction of multiple comparisons. (B) There were statistically significant differences (P < 0.05) in the delay time measured in seven channels (10, 13, 14, 17–19, and 22) after the correction of multiple comparisons.