Figure 1.
Probe position on the head and estimated channel position on the individual and model brains. (A) Anterior view of the head with the cap. The arrow indicates the nasion where a landmark is for spatial registration. (B) Lateral view from the left. Probes were attached to 16 holes in the highlighted area. The arrow indicates the left tragus. (C) Lateral view from the right. Probes were attached to 16 holes in the highlighted area. The arrow indicates the right tragus. (D) Schema of the probe positioning. L, light source; D, detector; Ch, channel. (E) Estimated channel position on the 3-D model of the patient’s brain created from a volumetric T1-weighted image. Red and blue dots indicate the light sources and detectors, respectively. (F) Estimated channel position (yellow squares) on the model brain based on the Montreal Neurological Institute coordinate system.