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. 2017 Aug 7;8(9):3993–4006. doi: 10.1364/BOE.8.003993

Fig. 9.

Fig. 9

Example high speed (10 Hz) FD-NIRS and DCS data acquired on the forehead of a healthy subject: a) raw FD-NIRS AC signal at 2 cm separation for λ = 830 nm; b) Oxy-hemoglobin concentration from the multi-distance measurements; c) DCS blood flow index from the 2 cm separation fibers.