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. 2010 Nov 29;4:193. doi: 10.3389/fnins.2010.00193

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Copyright © 2010 Zoccolan, Graham and Cox.

This is an open-access article subject to an exclusive license agreement between the authors and the Frontiers Research Foundation, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are credited.

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Validation of the eye-tracking system in a head-fixed rat. (A) Several minutes of the azimuth (i.e., horizontal) gaze angle tracking in a head-fixed rat. During this period the animal made several saccades (with an amplitude of approximately 5°) interleaved with fixation periods lasting tens of seconds. (B) Horizontal gaze angle recorded during the presentation of a 0.25 cycles per degree sinusoidal grating moving at 5.0°/s in the leftward (top) or rightward (bottom). Vertical lines indicate the appearance and disappearance of the grating. Optokinetic nystagmus, composed of a drift in gaze angle following the direction of grating movement and corrective saccade, is visible during both trials.