Figure 3.

Pointing to tactile targets. (A) Conditions from Brandes and Heed (2015). In each trial, participants initiated a straight reach. When the hand passed a trigger location (ca. 10 cm into the reach), the participant recieved a visual or tactile stimulus on their uncrossed or crossed feet and had to redirect the reach to this stimulus. (B) Spatial characteristics of the resulting reach trajectories. Single-subject example of mean trajectories; reaches to the left target were flipped to be analysed together with reaches to the right target. Points display single-trial turn points towards the correct goal location for reaches to visual and tactile targets located at uncrossed (light blue/red) or crossed feet (dark blue/red). Dashed line indicates the mean of a subset of reaches that first deviated towards the incorrect side of space (about 15% of reaches, termed “turn-around trajectories”). When turn-around reaches were excluded, the remaining 85% of trials showed trajectories that continued straight and then immediately turned to the correct target. Figure was adapted from Brandes and Heed (2015).