Figure 1.

Illustration of the hand position and finger movement in two versions (A,B) of the normal (acquisition and retention), visual, and motor conditions. In the visual condition the display is to the same as in the normal condition, but because the hand position is changed different fingers and movements are required to move to the correct keys. In the motor condition the display is changed from the normal condition, but because the hand position has changed the same fingers and movements are required. Note that the illustration only depicts a single set. In the 2 × 10 tasks, a trial was composed of 10 sets. (redrawn from Bapi et al., 2000).