Figure 2

Magnitude of TIVS. (A) Psychometric functions obtained for each spatial and tactile condition. The horizontal axis denotes the contrast of the visual targets and the vertical axis denotes the proportion of the correct responses in the visual orientation discrimination task. (B) Estimated contrast thresholds. The horizontal axis denotes the conditions and the vertical axis denotes the contrast thresholds. (C) The magnitudes of TIVS calculated by subtracting the contrast threshold in the without-touched condition from that in the touched condition. The horizontal axis denotes the spatial conditions and the vertical axis denotes the magnitude of TIVS. Error bars denote the standard errors of the mean (N = 28). Asterisks denote significant differences (p < 0.05).