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. 2011 Jun 27;6(6):e21256. doi: 10.1371/journal.pone.0021256

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Salimpour et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The paradigm for the passive fixation task is illustrated. The presentation of the stimulus sequence started after the monkey maintained fixation for 300 ms. Each stimulus lasted 300 ms and was followed by another stimulus after a 700 ms interstimulus interval. The sequence stopped when 36 stimuli were presented, or when the monkey broke the gaze fixation.