Tartaglia Elisa M, Aberg Kristoffer C, Herzog Michael H
Laboratory of Psychophysics, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 19, 1015 Lausanne, Switzerland.
Vision Res. 2009 May;49(11):1420-7. doi: 10.1016/j.visres.2009.02.013. Epub 2009 Mar 1.
In perceptual learning, performance usually improves when observers train with one type of stimulus, for example, a bisection stimulus. Roving denotes the situation when, instead of one, two or more types of stimuli are presented randomly interleaved, for example, a bisection stimulus and a vernier. For some combinations of stimulus types, performance improves in roving situations whereas for others it does not. To investigate when roving impedes perceptual learning, we conducted four experiments. Performance improved, for example, when we roved a bisection stimulus and a vernier but not when we roved certain types of bisection stimuli. We propose that roving hinders perceptual learning when the stimulus types are clearly distinct from each other but still excite overlapping but not identical neural populations.
在知觉学习中，当观察者使用一种类型的刺激（例如，二分刺激）进行训练时，表现通常会提高。漫游指的是这样一种情况：不是呈现一种刺激，而是随机交错呈现两种或更多类型的刺激，例如，一个二分刺激和一个游标。对于某些刺激类型的组合，在漫游情况下表现会提高，而对于其他组合则不会。为了研究漫游何时会阻碍知觉学习，我们进行了四项实验。例如，当我们将二分刺激和游标进行漫游时，表现会提高，但当我们对某些类型的二分刺激进行漫游时，表现则不会提高。我们提出，当刺激类型彼此明显不同但仍激发重叠但不完全相同的神经群体时，漫游会阻碍知觉学习。
