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. 2011 Feb 23;2(3):680–695. doi: 10.1364/BOE.2.000680

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©2011 Optical Society of America

This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Unported License, which permits download and redistribution, provided that the original work is properly cited. This license restricts the article from being modified or used commercially.

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Fig. 5. — (a)–(c) 3D coronal views of the anatomical head model including the extra-cerebral vasculature (in black) and the regions of activation A, B and C (in gold) superimposed with the HD grid. Sources and detectors are represented by red and blue dots, respectively. A true change ΔC_HbO = 9µMol/ℓ was simulated in the region of activation. (d)–(f) Corresponding recovered changes in oxyhemoglobin concentration ΔC^Sinus_HbO estimated with the model including the extra-cerebral vasculature (Sinus). (g)–(i) Corresponding recovered ΔC^NoSinus_HbO estimated when the vasculature was not modeled (No Sinus). (j)–(l) Corresponding normalized differences in percentage between ΔC_HbO reconstructed from the two anatomical models. All images were posterior coronal projections of a cortical shell of 1 cm of thickness and represent the field of view of the HD grid when removing the scalp and the skull [13]. The white dashed circle superimposed on each 9 reconstruction maps indicated the diameter of the region of activation.