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. 2015 Nov 17;10(11):e0143314. doi: 10.1371/journal.pone.0143314

Fig 2. Position of the optode probe set on the head.

Fig 2

(A) Channel configuration of the optode probe set (2x4x4). The gray numbers in the white rectangles represent the NIRS channel number and the corresponding Brodmann areas are shown in black. The NIRS probe set of 48 channels was positioned over right and left motor cortex. Red and blue circles illustrate positions of NIRS sensors and detectors, respectively. According to the international 10–20 placement system we used Cz, T7 and T8 as marker positions for ensuring replicable placements of the optodes. (B) Projections of the 48 NIRS channel positions (white points) on the cortical surface over the right hemisphere. NIRS positions are overlaid on a MNI-152 compatible canonical brain that is optimized for NIRS analysis according to a procedure of Singh et al. (2005) [63].