Interdigit distance in the four feedback conditions for the trials completed with success, during transitional (first second) and hold (last 4 seconds) phases. The sixth second of the hold phase has been disregarded since it was not relevant. Data are standardized over the transitional phase (first second) and reported in terms of z-score. Dashed lines represent the single participants, solid lines represent the mean value across the participants. Significant regions (permutation statistic, p < 0.05) are highlighted with a blue (for smaller distances) or red (for larger distances) background areas. The vertical dashed lines marked with 1 represent the beginning of the hold phase (i.e., the beginning of the feedback removal), while the vertical dashed line marked with 2 represents the instant when the transient feedback is equal to zero – see Equation (3).