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. 2015 Jan 22;5:1594. doi: 10.3389/fpsyg.2014.01594

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Copyright © 2015 Zele and Cao.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Chromaticity shifts in the color appearance of cone signals due to rod excitation. Data for one observer (JP) plotted in a relative cone Troland space at 2 photopic Td (A) and 10 photopic Td (B). The arrows indicate the effect of increased rod excitation on the direction of the color shift from the stimulus chromaticities (unfilled circles) to the matching chromaticities (filled circles). Ellipses show the chromaticities of eight non-dark appearing basic colors. Adapted from Cao et al. (2005).