Postle Bradley R, Yu Qing
Department of Psychiatry University of Wisconsin-MadisonMadison, WI USA.
Department of Psychology University of Wisconsin-MadisonMadison, WI USA.
Vis cogn. 2020;28(5-8):447-452. doi: 10.1080/13506285.2020.1777237. Epub 2020 Jun 14.
Several recent studies have interpreted multivariate evidence for stimulus-specific patterns of activity in parietal and/or frontal cortex as evidence for a representational function in those regions that is qualitatively similar to the representational functions of the visual system. Here we argue that although evidence that a brain system takes on a different configuration for each stimulus in a stimulus set is a necessary property for that system having a role in perceptual representation, such evidence is not specific for this function. Drawing on several recent examples from the recent literature, we offer alternative accounts for understanding stimulus-specificity in parietal and frontal cortex that are consistent with longstanding ideas that activity these regions is best understood as implementing control-related, rather than inherently representational, functions.
最近的几项研究将顶叶和/或额叶皮质中特定刺激活动模式的多变量证据解释为这些区域具有与视觉系统的表征功能在性质上相似的表征功能的证据。在此我们认为，虽然一个脑系统针对刺激集中的每个刺激呈现不同配置的证据是该系统在知觉表征中发挥作用的必要属性，但这种证据并非该功能所特有的。借鉴近期文献中的几个例子，我们提供了理解顶叶和额叶皮质中刺激特异性的其他解释，这些解释与长期以来的观点一致，即这些区域的活动最好理解为执行与控制相关而非固有表征的功能。
