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Organizational Structure Reduces Processing Load in the Prefrontal Cortex During Discourse Processing of Written Text: Implications for High-Level Reading Issues After TBI

机译：组织结构减少了前额叶皮层处理负荷在书面文字的话语处理：对高层次阅读问题的启示TBI后

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Adults with traumatic brain injury (TBI) can demonstrate marked difficulty producing discourse during story retell and story generation tasks. Changes in discourse production have been detailed in terms of fewer content units and infrequent use of story grammar elements essential for organization. One implication is that poor use of story grammar elements during discourse production may signal reduced ability to utilize these elements in other communication realms (e.g., reading comprehension). The neural architecture that supports discourse organization, primarily the medial prefrontal cortex, is particularly susceptible to damage secondary to acquired brain injury. In this event related functional magnetic resonance imaging (fMRI) study, we describe cortical activation patterns of unimpaired readers as they are presented with discourse that is varied in terms of structural organization. The results suggest reading discourse with less structure is associated with increased cortical activity (e.g., higher processing demands) as compared to reading discourse with more traditional structural cues (e.g., story grammar). We discuss cortical areas implicated and potential implications for supporting discourse communication in persons following TBI.
机译：患有外伤性脑损伤（TBI）的成年人可以表现出在讲故事和讲故事的任务过程中进行演讲的明显困难。话语产生中的变化已通过减少内容单元和不经常使用组织必不可少的故事语法元素的方式进行了详细说明。一种暗示是在话语产生过程中对故事语法元素的不良使用可能表示降低了在其他交流领域中使用这些元素的能力（例如，阅读理解）。支持话语组织（主要是内侧前额叶皮层）的神经结构特别容易受到继发性脑损伤的损害。在此事件相关的功能磁共振成像（fMRI）研究中，我们描述了视障者的皮质激活模式，因为他们的演讲涉及到结构组织方面的变化。结果表明，与具有更多传统结构提示（例如故事语法）的阅读话语相比，具有较少结构的阅读话语与皮质活动增加（例如，更高的加工需求）相关。我们讨论了涉及TBI后人员话语交流的牵连的皮质区域及其潜在影响。

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