Figure 3.

The time-course of the average change in oxyhemoglobin (oxy-Hb), deoxyhemoglobin (deoxy-Hb), and total-hemoglobin (total-Hb) concentrations during the same-face condition and the different-face condition in Experiment 1. The left column shows data from the left temporal area, and the right column shows those from the right temporal area. The black line in the graph represents the mean Z-score of the different-face condition, and gray line represents the mean Z-score of the same-face condition. Zero on the horizontal axis represents the beginning of the test period and 10 on the horizontal axis represents the end of the test period.