Control of Precision Grip Force in Lifting and Holding of Low-Mass Objects
Fig 5
A typical example of the mean probability of correct response in relation to percent difference in test mass from the standard masses of 10 and 112 g for the rayon surface in one subject (A). Logistic function curves were fitted to examine their relationship. Changes in mean Weber's fraction with test mass for all subjects for the rayon and sandpaper surfaces (B).
The vertical bars indicate the standard deviation values.