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The proportion of total viewing time perceiving a particular stable uniform color percept, with chromatic modulation along each of the cardinal directions (above, 0°–180 for three observers; below, 90°–270 for three observers). The interocular-switch frequency was 3.75 Hz, as indicated within each bar. The approximate perceived stable color is indicated by the bar's color. Error bars show SEMs (SEM less than 0.02 where not plotted). Values replotted from Figure 4.
