Computational Model for Dyadic and Bimanual Reaching Movements

While hand trajectory has been successfully modeled for single arm reaching movement, few works have considered the bimanual reaching movement and no study has modeled the dyadic reaching movement. In a bimanual task, both hands belong to the same person, while in a dyadic task each hand belongs to a different person. In this paper, we study both bimanual and dyadic reaching movements and show that the motion trajectory follows the minimum-jerk trajectory. To the best of our knowledge, this is the first work that studies the dyadic reaching movements. Furthermore, we show that our model is consistent with the existing theories on single arm motions, when applied to each of the cooperating arms.