 The examiner explained the task verbally and gave three demonstrations of how to perform the coincidence timing tasks. The participants were instructed to place the preferred hand i.e., the less affected hand on a mark aside to the target The location was individually adjusted but ranged from 2 to 4 cm from the target. Once the first top cube turned on, the individual had to move his hand to either touch the target key on the keyboard or to make a hitting gesture in front of the webcam, exactly at the moment coinciding with the bottom target cube turning on. Different sounds were provided as feedback for either a hit or miss during acquisition, retention and transfer, the range of error being -200 to 200ms. 