Elsevier

Vision Research

Volume 33, Issue 3, February 1993, Pages 397-412
Vision Research

Long-term learning in vernier acuity: Effects of stimulus orientation, range and of feedback

https://doi.org/10.1016/0042-6989(93)90094-DGet rights and content

Abstract

In hyperacuity, as in many other tasks, performance improves with practice. To better understand the underlying mechanisms, we measured thresholds of 41 inexperienced observers for the discrimination of vernier displacements. In spite of considerable inter-individual differences, mean thresholds decreased monotonically over the 10,000 stimuli presented to each observer, if stimulus orientation was constant. Generalization of learning seemed to be possible across offset-ranges, but not across orientations. Learning was slightly faster with error feedback than without it in one experiment. These results effectively constrain the range of conceivable models for learning of hyperacuity.

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