Directional biases reveal utilization of arm's biomechanical properties for optimization of motor behavior.

@article{Goble2007DirectionalBR,
  title={Directional biases reveal utilization of arm's biomechanical properties for optimization of motor behavior.},
  author={Jacob A. Goble and Yanxin Zhang and Yury P. Shimansky and Siddharth Sharma and N. V. Dounskaia},
  journal={Journal of neurophysiology},
  year={2007},
  volume={98 3},
  pages={1240-52}
}
Strategies used by the CNS to optimize arm movements in terms of speed, accuracy, and resistance to fatigue remain largely unknown. A hypothesis is studied that the CNS exploits biomechanical properties of multijoint limbs to increase efficiency of movement control. To test this notion, a novel free-stroke drawing task was used that instructs subjects to make straight strokes in as many different directions as possible in the horizontal plane through rotations of the elbow and shoulder joints… CONTINUE READING

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