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. 2020 Jan 18;41(1):32–38. doi: 10.24272/j.issn.2095-8137.2020.005

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Editorial Office of Zoological Research, Kunming Institute of Zoology, Chinese Academy of Sciences

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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A: Non-invasive head restraint method. B: Behavioral eye-tracking setup, in which a conscious monkey wearing a restraint helmet sits in a primate chair and faces the Tobii Pro TX300 Eye Tracker. C: Five-point calibration results for both eyes indicated by green dots. D: Description of three tasks performed sequentially, including single image test (SIT), two image comparison test (TICT), and four image comparison test (FICT). E: Top panel, example of manually drawn areas of interest (AOIs, red and yellow squares); bottom panel, heatmap example of eye-tracking results within different AOIs, with red representing most attended area. B and C are quoted and modified from our previous report (Zhang et al., 2019b).