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Averaged HbO (solid lines) and HbR (dotted lines) time course for beliefs (blue thick line), desires (red thinner line), and physical (green thinnest line) conditions. Curves exhibit the canonical slow surge in oxy-hemoglobin with simultaneous decrease in deoxy-hemoglobin over the course of the experimental block, in the 0–20 s window selected for analysis (total block duration = 26 s).
