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Journal of Vision. 2013; 13(9):614. https://doi.org/10.1167/13.9.614
Journal of Vision. 2010; 10(7):1086. https://doi.org/10.1167/10.7.1086
Journal of Vision. 2008; 8(6):1055. https://doi.org/10.1167/8.6.1055
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