The Topology of Limb Deceleration in Prehension Tasks.

  title={The Topology of Limb Deceleration in Prehension Tasks.},
  author={Frank T. J. M. Zaal and Reinoud J. Bootsma},
  journal={Journal of motor behavior},
  volume={27 2},
Whether a subject uses a constant tau-dot strategy to decelerate a reach to grasp an object is typically determined by performing a linear regression of tau onto real time to contact. This method has the disadvantage of requiring an assumption (on the part of the experimenter) concerning the endpoint targeted by the subject. In the present contribution, an alternative, topological method is proposed that makes use of a phase-plane representation of the movement. In two experiments… CONTINUE READING