Predicting precision grip grasp locations on three-dimensional objects
Fig 5
(a) Attraction towards the object CoM for grasps executed onto light (Experiment 1) and heavy (Experiment 2) objects compared to the average CoM distance of grasps uniformly distributed on the object surfaces (zero reference). (b) Attraction towards the object CoM in Experiment 2 as a function of trial repetition. Red line is the best-fitting regression line through the data (c) Human grasps from Experiment 2 onto object S presented at orientation 2. (d) Attraction towards the object CoM compared to Experiment 1 grasps (zero reference), for Experiment 2 grasps onto heavy objects whose CoM is closer, the same distance as, or farther than the light wooden objects from Experiment 1. In panels a, b, and d, data are means, error bars represent 95% bootstrapped confidence intervals. ** p<0.01, *** p<0.001.