Anticipatory adjustments in the unloading task: Is an efference copy necessary for learning?

@article{Diedrichsen2002AnticipatoryAI,
  title={Anticipatory adjustments in the unloading task: Is an efference copy necessary for learning?},
  author={J{\"o}rn Diedrichsen and Timothy Verstynen and Andrew Hon and Steven L. Lehman and Richard B. Ivry},
  journal={Experimental Brain Research},
  year={2002},
  volume={148},
  pages={272-276}
}
Abstract. In the unloading task, a weight is held in the palm of one hand. When an external agent removes the weight, an upward perturbation of the loaded hand is observed. However, when a person removes the weight by lifting it with their own hand, the perturbation is attenuated due to an anticipatory adjustment of the flexor muscles in the load-bearing arm. An experiment was conducted to examine conditions under which this anticipatory response could be learned. Using a virtual reality system… CONTINUE READING

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