Figure 2

Comparison of luminance contrast thresholds as a function of the chromatic noise length obtained in three consecutive sessions (white circles, first session; black circles, second session; red circles, third session). (A–C) represent individual datapoints from three representative participants of the sample. (D) represented the averaged functions for each session. There were significant differences for the chromatic noise vectors of 0.06 and 0.03. The first session had higher contrast thresholds than the other two consecutive sessions (*p < 0.05). Error bars represent the standard deviation of the mean.