Correction to: Brain Struct Funct (2017) 222:923–942 https://doi.org/10.1007/s00429-016-1255-4

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SUPPLEMENTARY FIGURE 1: sparsity levels differ in AD patients and control groups for the same correlational thresholds. Data of AD group are shown in red, data of control group are in blue. The two curves were obtained based on AD patient and control data, respectively, by computing sparsity (proportion of edges out of the total number of possible edges) of graphs constructed by using as correlation threshold all correlation values between 0 and 1 in steps of 0.001. One sparsity level corresponds to two different correlation coefficients for patient and control groups, and conversely, one correlation coefficient value corresponds to two different sparsity levels (dashed lines). Sparsity level of 5% corresponded to a correlational threshold of 0.5715 in patients and 0.5225 in controls; sparsity level of 34% corresponded to a correlational threshold of 0.3765 in patients and 0.3515 in controls.