Fig. 5From: Incremental rate of prefrontal oxygenation determines performance speed during cognitive Stroop test: the effect of ageingTime courses of the average Oxy-Hb responses in four repetitive trials of the word-reading test are represented at various 22 sites of bilateral prefrontal cortices in young (red line) and elderly subjects (blue line). Vertical dotted lines indicate the start and end of the word-reading test in both age groupsBack to article page