Clarke Aaron M, Grzeczkowski Lukasz, Mast Fred W, Gauthier Isabel, Herzog Michael H
Laboratory of Psychophysics, Brain Mind Institute, École Polytechnique Fédérale de Lausanne (EPFL), Switzerland.
Laboratory of Psychophysics, Brain Mind Institute, École Polytechnique Fédérale de Lausanne (EPFL), Switzerland.
Vision Res. 2014 Jun;99:88-92. doi: 10.1016/j.visres.2013.12.010. Epub 2013 Dec 30.
In typical perceptual learning experiments, one stimulus type (e.g., a bisection stimulus offset either to the left or right) is presented per trial. In roving, two different stimulus types (e.g., a 30' and a 20' wide bisection stimulus) are randomly interleaved from trial to trial. Roving can impair both perceptual learning and task sensitivity. Here, we investigate the relationship between the two. Using a bisection task, we found no effect of roving before training. We next trained subjects and they improved. A roving condition applied after training impaired sensitivity.
在典型的知觉学习实验中，每次试验呈现一种刺激类型（例如，向左或向右偏移的二等分刺激）。在变动试验中，两种不同的刺激类型（例如，30'和20'宽的二等分刺激）在每次试验中随机交错呈现。变动试验会损害知觉学习和任务敏感性。在此，我们研究两者之间的关系。使用二等分任务，我们发现在训练前变动试验没有影响。接下来我们训练受试者，他们的表现得到了改善。训练后应用变动试验条件会损害敏感性。
