Cortical analysis of visual context
Cortical analysis of visual context
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DOI：
10.1016/s0896-6273(03)00167-3
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发表时间：
2003-04-24
期刊：
影响因子：
16.2
通讯作者：
Aminoff, E
中科院分区：
文献类型：
--
作者：
Bar, M;Aminoff, E
我们环境中的对象往往会在典型的上下文中进行分组。人类大脑是如何分析视觉对象与其特定背景之间的这种关联的？我们在四个功能性神经成像实验中解决了这个问题，并揭示了当人们识别高度相关的物体（例如，交通灯）。我们的研究结果表明，在海马旁皮质和压后皮质的一个区域共同组成一个系统，调解空间和非空间的上下文处理。有趣的是，这些区域中的每一个在过去都被确定为具有两种功能：空间信息处理和情景记忆。相反，将背景分析归因于这两个领域，为以前的报告提供了一个框架。
Objects in our environment tend to be grouped in typical contexts. How does the human brain analyze such associations between visual objects and their specific context? We addressed this question in four functional neuroimaging experiments and revealed the cortical mechanisms that are uniquely activated when people recognize highly contextual objects (e.g., a traffic light). Our findings indicate that a region in the parahippocampal cortex and a region in the retrosplenial cortex together comprise a system that mediates both spatial and nonspatial contextual processing. Interestingly, each of these regions has been identified in the past with two functions: the processing of spatial information and episodic memory. Attributing contextual analysis to these two areas, instead, provides a framework for bridging between previous reports.