Perceptual illusion and the real-time control of action.

  title={Perceptual illusion and the real-time control of action.},
  author={David A. Westwood and Melvyn A. Goodale},
  journal={Spatial vision},
  volume={16 3-4},
Participants were cued by an auditory tone to grasp a target object from within a size-contrast display. The peak grip aperture was unaffected by the perceptual size illusion when the target array was visible between the response cue and movement onset (vision trials). The grasp was sensitive to the illusion, however, when the target array was occluded from view when the response was cued (occlusion trials). This was true when the occlusion occurred 2.5 s before the response cue (delay), but… CONTINUE READING
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