Individual differences in metacontrast masking are enhanced by perceptual learning
Individual differences in metacontrast masking are enhanced by perceptual learning
复制标题
DOI：
10.1016/j.concog.2009.12.002
复制
发表时间：
2010-06-01
影响因子：
2.4
通讯作者：
Mattler, Uwe
中科院分区：
文献类型：
--
作者：
Albrecht, Thorsten;Klapoetke, Susan;Mattler, Uwe
在视觉研究中，元对比掩蔽是一种广泛使用的降低刺激可见度的技术。通常，研究试图揭示适用于大多数参与者的一般原则，并倾向于忽略可能的个体差异。视觉系统的神经可塑性。然而，观察者执行感知任务的方式可能存在个体差异。我们报告了元对比掩蔽任务中感知学习的案例，尽管学习条件相同，但该任务导致两种类型的成人观察者的增强。在启动任务中，两种类型的观察者都表现出相同的启动效应，这对学习不敏感。研究结果表明，元对比掩蔽任务中目标刺激的视觉处理是基于具有足够可塑性的神经水平，以实现两种类型观察者的发展，这对启动任务中目标刺激的处理没有贡献。 (C) 2009 Elsevier Inc. 保留所有权利。
In vision research metacontrast masking is a widely used technique to reduce the visibility of a stimulus. Typically, studies attempt to reveal general principles that apply to a large majority of participants and tend to omit possible individual differences. The neural plasticity of the visual system. however, entails the potential capability for individual differences in the way observers perform perceptual tasks. We report a case of perceptual learning in a metacontrast masking task that leads to the enhancement of two types of adult human observers despite identical learning conditions. In a priming task both types of observers exhibited the same priming effects, which were insensitive to learning. Findings suggest that visual processing of target stimuli in the metacontrast masking task is based on neural levels with sufficient plasticity to enable the development of two types of observers, which do not contribute to processing of target stimuli in the priming task. (C) 2009 Elsevier Inc. All rights reserved.