Figure 4 | Scientific Reports

Figure 4

From: Reliability of Frontal Eye Fields Activation and Very Low-Frequency Oscillations Observed during Vergence Eye Movements: an fNIRS Study

Figure 4

(A) Source-detector (SD) configuration, the source (red) and detector (blue) optodes are denoted as circle, functional channels are denoted as squares, and the FEF location is denoted by the gray FEF circles. All channels have 30 mm SD distance except for channels 1, 6, 9, and 14 which have an SD distance of 10 mm. (B) The experimental block design was composed of sustained fixation (denoted as Fixation) and vergence eye movements (denoted as Eye Mvt) which modulated functional activity within the vergence neural substrates. (C) Eccentric square stimuli; when converged upon, a person will perceive depth, where the squares will appear one in front of the other (larger to smaller). The source (pink) and detector (blue) optode locations on a skin (D) and cortical (E) overlay with the utilized FEF location in a coronal (F) and axial (G) view with corresponding optode patch location is show in the right side of the figure. The sensitivity map (H) was generated using AtlasViewer.

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