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首页> 美国卫生研究院文献>The Journal of Neuroscience >Cortical Areas Involved in Object Background and Object-Background Processing Revealed with Functional Magnetic Resonance Adaptation
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Cortical Areas Involved in Object Background and Object-Background Processing Revealed with Functional Magnetic Resonance Adaptation

机译：涉及对象背景和对象-背景处理的皮质区域通过功能性磁共振适应得以揭示

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Previous work has suggested that object and place processing are neuroanatomically dissociated in ventral visual areas under conditions of passive viewing. It has also been shown that the hippocampus and parahippocampal gyrus mediate the integration of objects with background scenes in functional imaging studies, but only when encoding or retrieval processes have been directed toward the relevant stimuli. Using functional magnetic resonance adaptation, we demonstrated that object, background scene, and contextual integration of selectively repeated objects and background scenes could be dissociated during the passive viewing of naturalistic pictures involving object-scene pairings. Specifically, bilateral fusiform areas showed adaptation to object repetition, regardless of whether the associated scene was novel or repeated, suggesting sensitivity to object processing. Bilateral parahippocampal regions showed adaptation to background scene repetition, regardless of whether the focal object was novel or repeated, suggesting selectivity for background scene processing. Finally, bilateral parahippocampal regions distinct from those involved in scene processing and the right hippocampus showed adaptation only when the unique pairing of object with background scene was repeated, suggesting that these regions perform binding operations.
机译：先前的工作表明，在被动观察的条件下，腹侧视觉区域的对象和位置处理在神经解剖学上是分离的。还已经表明，在功能成像研究中，海马和海马旁回介导了对象与背景场景的整合，但是仅当编码或检索过程已针对相关刺激时才如此。使用功能性磁共振适应，我们证明了对象，背景场景以及选择性重复的对象和背景场景的上下文集成可以在被动查看涉及对象场景配对的自然主义图片时分离。具体而言，双边梭形区域显示适应对象重复，无论相关场景是新颖的还是重复的，表明对对象处理敏感。无论焦点对象是新颖的还是重复的，双侧海马旁区域均显示出对背景场景重复的适应性，这表明背景场景处理具有选择性。最后，仅当对象与背景场景的唯一配对重复出现时，与场景处理和右侧海马区分开的双侧海马旁区域才显示出适应性，表明这些区域执行绑定操作。

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