Fig 2. Slope of the rising phase and height of the torque responses (green) and spontaneous body saccades during ITIs (red).

For the experimental conditions ‘Single’ (N = 21) and ‘One of two’ (N = 20) data are split into ‘syn’ and ‘anti’ with regard to the response polarity. For the experimental condition 'Both' no such differentiation can be made. Syn-directional responses have a similar shape as the ones generated when both stripes are displaced ('Both'; N = 21). Body saccades differ in slope and height in the three experimental conditions ('Single', 'One-of-two', 'Both'). Anti-directional responses resemble body saccades.