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An analysis of the mean reflectance signal content. To ensure that a mean-based intrinsic signal was not lost due our normalization approach, we examined the change in mean cone reflectance across all trials of a 550 nm, 382 nW/deg2 stimulus condition for subject 11049. Individual trials (gray lines) did not show a clear, repeatable change in mean reflectance during or following the stimulus. Averaging across trials (black line) also did not produce a change in the mean.
