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The Lateral Occipital Complex shows no net response to object familiarity

机译:枕外侧部对对象熟悉度没有净反应

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摘要

In 1995, Malach et al. discovered an area whose fMRI BOLD response was greater when viewing intact, familiar objects than when viewing their scrambled versions (resembling texture). Since then hundreds of studies have explored this late visual region termed the Lateral Occipital Complex (LOC), which is now known to be critical for shape perception (James, Culham, Humphrey, Milner, & Goodale, ). Malach et al. () discounted a role of familiarity by showing that “abstract” Henry Moore sculptures, unfamiliar to the subjects, also activated this region. This characterization of LOC as a region that responds to shape independently of familiarity has been accepted but never tested with control of the same low-level features. We assessed LOC's response to objects that had identical parts in two different arrangements, one familiar and the other novel. Malach was correct: There is no net effect of familiarity in LOC. However, a multivoxel correlation analysis showed that LOC does distinguish familiar from novel objects.
机译:在1995年,Malach等人。发现了一个区域,在观看完整且熟悉的物体时,其fMRI BOLD响应要大于在观看其混乱版本(类似于纹理)时。从那以后,数百项研究探索了被称为“枕外侧部复合体”(LOC)的这一晚期视觉区域,该区域现已被认为对于形状感知至关重要(James,Culham,Humphrey,Milner和&Goodale,)。 Malach等。 ()通过显示不熟悉主题的“抽象”亨利·摩尔雕塑也激活了该区域,从而消除了熟悉的作用。将LOC描述为独立于熟悉程度而对形状做出响应的区域的特征已被接受,但从未在相同的低级特征控制下进行过测试。我们评估了LOC对物体在两种不同布置中具有相同部分的响应,一种是熟悉的,另一种是新颖的。马拉奇是正确的:在LOC中没有熟悉的净效果。但是,多体素相关分析表明,LOC确实将熟悉的对象与新颖的对象区分开。

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