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. 2008 Dec 10;3(12):e3912. doi: 10.1371/journal.pone.0003912

Figure 2. Mean time courses of hemodynamic response among all channels under each condition.

Figure 2

While the oxyhemoglobin (oxy-Hb) signal changes (A) showed a positive response to the auditory events in Exp-CE (red line) and Cont-CE (blue line), the deoxyhemoglobin (deoxy-Hb) signal changes (B) showed a negative response. The dark gray bars and light gray bars indicate the cue period and the event period, respectively.