The role of separation and eccentricity in encoding position.

  title={The role of separation and eccentricity in encoding position.},
  author={Dennis M Levi and Stanley A. Klein},
  journal={Vision research},
  volume={30 4},
We measured two- and three-line spatial interval and alignment thresholds for a wide range of separations and eccentricities. In order to avoid confounding the role of separation and eccentricity, the test lines were presented on iso-eccentric arcs, with radii between 0.625 and 10 deg. The iso-eccentric paradigm allows separation to be varied over a large range while holding eccentricity constant. Our main finding is that for all tasks, at all eccentricities, Weber's law fails at large… CONTINUE READING