Fahle M, Edelman S
Universitäts-Augenklinik, Department of Neuro-Ophthalmology, Tübingen, Germany.
Vision Res. 1993 Feb;33(3):397-412. doi: 10.1016/0042-6989(93)90094-d.
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.
在超敏锐度方面，如同许多其他任务一样，练习能提高表现。为了更好地理解其潜在机制，我们测量了41名无经验观察者辨别游标位移的阈值。尽管个体间存在相当大的差异，但如果刺激方向恒定，在向每位观察者呈现的10000次刺激过程中，平均阈值会单调下降。学习似乎可以在偏移范围内进行泛化，但不能跨方向泛化。在一项实验中，有错误反馈时的学习速度比没有错误反馈时略快。这些结果有效地限制了关于超敏锐度学习的可想象模型的范围。
