Contributions of form, motion and task to biological motion perception.

  title={Contributions of form, motion and task to biological motion perception.},
  author={Martin Thirkettle and Christopher Benton and Nicholas E. Scott-Samuel},
  journal={Journal of vision},
  volume={9 3},
The ability of human observers to detect 'biological motion' of humans and animals has been taken as evidence of specialized perceptual mechanisms. This ability remains unimpaired when the stimulus is reduced to a moving array of dots representing only the joints of the agent: the point light walker (PLW) (G. Johansson, 1973). Such stimuli arguably contain underlying form, and recent debate has centered on the contributions of form and motion to their processing (J. O. Garcia & E. D. Grossman… CONTINUE READING