The relationship between cortical object and scene areas in object and scene processing

物体和场景处理中皮质物体和场景区域的关系

• 批准号: 327588-2012
• 负责人: Steeves, Jennifer
• 金额: $ 2.26万
• 依托单位: York University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=595267
• 关键词: relationship; between; cortical; object; scene

Mounting evidence from behavioural measures, neuroimaging and clinical data has shown that objects and scenes are processed independently and that, counterintuitively, a scene can be categorized without the need to recognize any of its constituent objects. This is akin to "seeing the forest without seeing the trees". The objective of this research program is to examine the relationship between object and scene processing and, in particular, an unexpected inhibitory contribution of object-selective cortical areas to scene processing. Our laboratory has recently demonstrated that inhibition of object-selective cortex (using transcranial magnetic stimulation, TMS) can enhance our ability to identify a scene, indicating release of an inhibitory mechanism. This is akin to "seeing the forest better without seeing the trees". This observation suggests for the first time that object and scene processing may not be as independent as previously thought but might instead involve inhibitory mechanisms. In the proposed research program we will assess the significance of this hitherto unsuspected inhibitory role of object-selective cortex on scene perception and whether or not there is a mutual inhibitory role of scene-selective cortex on object processing at both the behavioural and neural level.

来自行为测量、神经成像和临床数据的越来越多的证据表明，物体和场景是独立处理的，而且与直觉相反，场景可以被分类，而不需要识别其任何组成物体。这就好比“只见林不见树”。这项研究计划的目的是检查对象和场景处理之间的关系，特别是，一个意想不到的抑制贡献的对象选择性皮层区域的场景处理。我们的实验室最近证明，抑制对象选择性皮层（使用经颅磁刺激，TMS）可以提高我们识别场景的能力，这表明抑制机制的释放。这就好比“不见树木，只见森林”。这一观察首次表明，对象和场景处理可能不像以前认为的那样独立，而是可能涉及抑制机制。在拟议的研究计划中，我们将评估迄今为止未被怀疑的抑制作用的对象选择性皮层的场景感知的意义，是否有一个相互抑制作用的场景选择性皮层对对象处理在行为和神经水平。