Luminance Contrast Shifts Dominance Balance between ON and OFF Pathways in Human Vision.

However, although highly significant, the correlations between age and visual performance were relatively weak because the individual variability in visual performance was higher than the variation with age ( r = 0.25 for total errors, r = 0.35 for missed targets, r = 0.43 for reaction time, p < 0.00,001 for all).

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