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. 2023 Jun 15;46(1):1017–1033. doi: 10.1007/s11357-023-00834-1

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© The Author(s) 2023

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Fig. 2 — a Pupillary response curves in response to no-tone (N, black), distractor (D, orange), and target (T, green) trials in younger, middle aged, and older adults after dynamic range normalization. The colored ribbon shows standard error of the mean. b Scores showing the average ratio between target AUC and distractor AUC, by individual, for each age group. The top and bottom of the box show 25th and 75th percentiles with the median indicated by the middle line. Whiskers show smallest and largest non-outlier values. DR is dynamic range