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Average percent signal change for each region of interest and each trial component for each scan. The significance level of each predictor (synonymous here with %signal change) is indicated by the shading of each bar (see key), whereas significant pairwise differences between predictors (assessed by Bonferroni-corrected 2-tailed t-tests) are represented by lines above the bars: *P < 0.05; #P < 0.01; ##P < 0.01.
