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Journal of Vision. 2012; 12(9):1168. https://doi.org/10.1167/12.9.1168
Journal of Vision. 2011; 11(11):140. https://doi.org/10.1167/11.11.140
Journal of Vision. 2009; 9(8):207. https://doi.org/10.1167/9.8.207
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