Fig. 5From: A haptic laparoscopic trainer based on affine velocity analysis: engineering and preliminary resultsMean values (SD) for time, collisions, and standard deviation means for affine velocity in exercise 2. For experts, intermediates (INT), inexperienced interns (I. Interns), and novices. *p < 0.05; **p < 0.01; ***p < 0.001Back to article page