Fig. 7From: Continuous supplementary tactile feedback can be applied (and then removed) to enhance precision manipulationInterdigit 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).Back to article page