Extending Fitts' law to a three-dimensional pointing task.

  title={Extending Fitts' law to a three-dimensional pointing task.},
  author={Atsuo Murata and Hiroki Iwase},
  journal={Human movement science},
  volume={20 6},
An attempt was made to extend Fitts' law to a three-dimensional movement (pointing) task to enhance its predictive performance in this domain. An experiment was conducted in which 10 subjects performed three-dimensional pointing movements under the manipulation of target size, distance to target and direction to target. As expected, the duration of these three-dimensional movements was rather variable and affected markedly by direction to target. As a result, the variance in the movement times… CONTINUE READING
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