Research Article

How Many Is Enough? Effect of Sample Size in Inter-Subject Correlation Analysis of fMRI

Figure 5

Average Dice index over 1000 resampling replications with three FDR levels: , , and . (a) presents the average Dice indexes over 1000 replications and (b) presents the corresponding variance. The curve corresponding to the most conservative threshold (yellow) shows that more subjects are required for greater similarity after applying the threshold to the data. The more liberal thresholds (in red) and (in blue) required fewer subjects to stabilize than the most conservative threshold (yellow) but on the other hand the highest similarity was reached with the most conservative threshold.
(a)
(b)