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首页> 外文期刊>Current directions in psychological science: a journal of the American Psychological Society >Category Learning Stretches Neural Representations in Visual Cortex
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Category Learning Stretches Neural Representations in Visual Cortex

机译：类别学习扩展了视觉皮层中的神经表示

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摘要

In this article, we review recent work that shows how learning to categorize objects changes how those objects are represented in the mind and the brain. After category learning, visual perception of objects is enhanced along perceptual dimensions that were relevant to the learned categories, an effect we call dimensional modulation. Dimensional modulation stretches object representations along category-relevant dimensions and shrinks them along category-irrelevant dimensions. The perceptual advantage for category-relevant dimensions extends beyond categorization and can be observed during visual discrimination and other tasks that do not depend on the learned categories. Evidence from fMRI studies shows that category learning causes ventral-stream neural populations in visual cortex representing objects along a category-relevant dimension to become more distinct. These results are consistent with a view that specific aspects of cognitive tasks associated with objects can account for how our visual system responds to objects.
机译：在本文中，我们回顾了最近的工作，这些工作显示了如何学习对对象进行分类，从而改变了这些对象在思想和大脑中的表示方式。在类别学习之后，对象的视觉感知会沿着与所学习类别相关的感知维度得到增强，这种效应我们称为维度调制。尺寸调制沿与类别相关的维度拉伸对象表示，并沿与类别无关的维度缩小对象表示。与类别相关的维度的感知优势超出了分类范围，可以在视觉辨别和其他不依赖于所学类别的任务中观察到。功能磁共振成像研究的证据表明，类别学习导致视觉皮层中代表类别相关维度上的对象的腹侧神经神经群变得更加明显。这些结果与以下观点一致：与对象相关的认知任务的特定方面可以说明我们的视觉系统如何响应对象。

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