Figure 1. Objects to be grasped.

The matchboxes adapted from McIntosh & Lashley [11] that were presented to German subjects. Original matchboxes (upper row) that were presented during baseline trials and their replica used during the last two perturbation trials (lower row). The replica of the Bluebell box was scaled with a factor of 1.25, while the replica of the Swan Vestas box was scaled with a factor of 0.8 compared to the original matchboxes.