Fig. 1.

Examples of reach-to-grasp behaviour. a–d Data from five trials reaching and lifting the rigid foam cuboid (object 20), for two deafferented participants (a, b) and two controls (c, d). The upper graph in each panel shows the reach speed profile as measured by the marker attached to the back of the hand; the lower graphs show the grip aperture between thumb and index finger. The moments of peak speed and the subsequent moments of maximum aperture are indicated with dots and squares, respectively