Perceptual distortion contributes to the curvature of human reaching movements

@article{Wolpert1994PerceptualDC,
  title={Perceptual distortion contributes to the curvature of human reaching movements},
  author={Daniel M. Wolpert and Zoubin Ghahramani and Michael I. Jordan},
  journal={Experimental Brain Research},
  year={1994},
  volume={98},
  pages={153-156}
}
Unconstrained point-to-point human arm movements are generally gently curved, a fact which has been used to assess the validity of models of trajectory formation. In this study we examined the relationship between curvature perception and movement curvature for planar sagittal and transverse arm movements. We found a significant correlation (P<0.0001, n=16) between the curvature perceived as straight and the curvature of actual arm movements. We suggest that subjects try to make straight-line… CONTINUE READING

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