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. 2015 Jun 10;9:72. doi: 10.3389/fncom.2015.00072

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Copyright © 2015 Daemi and Crawford.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Distributions of head, eye, and gaze orientations for equal contributions of eye and head rotations to horizontal and vertical directions. Model simulations producing gaze-shifts from the central fixation point (reference condition) to a uniform distribution of targets on the screen in range (−40, 40) degrees horizontal and (−40, 40) degrees vertical. The first (A,D), second (B,E), and third (C,F) columns, respectively, show eye-in-head (red), head-in-space (green), and eye-in-space orientations after the gaze-shift. First row illustrates the horizontal (right/left) against the vertical (up/down) components while the third row shows the horizontal (right-left) against the torsional (CW/CCW) components. The parameters of the model are set to α = β = δ = 0.5. The black curve shows gaze orientations for targets aligned horizontally on top of the screen.