Non-canonical sentence comprehension impairments are well-documented in aphasia. Studies of neurotypical controls indicate that prosody can aid comprehension by facilitating attention towards critical pitch inflections and phrase boundaries. However, no studies have examined how prosody may engage specific cognitive and neural resources during non-canonical sentence comprehension in persons with left hemisphere damage. Experiment 1 examines the relationship between comprehension of non-canonical sentences spoken with typical and atypical prosody and several cognitive measures in 25 persons with chronic left hemisphere stroke and 20 matched controls. Experiment 2 explores the neural resources critical for non-canonical sentence comprehension with each prosody type using region-of-interest-based multiple regressions. Lower orienting attention abilities and greater inferior frontal and parietal damage predicted lower comprehension, but only for sentences with typical prosody. Our results suggest that typical sentence prosody may engage attention resources to support non-canonical sentence comprehension, and this relationship may be disrupted following left hemisphere stroke.

中文翻译：

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韵律对支持句子理解的认知和神经资源的影响：行为和病变症状映射研究


失语症中的非规范句子理解障碍已有充分记录。对神经典型控制的研究表明，韵律可以通过促进对关键音调变化和短语边界的注意力来帮助理解。然而，还没有研究探讨韵律如何在左半球损伤的人理解非规范句子时调动特定的认知和神经资源。实验 1 检查了 25 名慢性左半球中风患者和 20 名匹配对照者对典型和非典型韵律的非规范句子的理解与几种认知测量之间的关系。实验 2 使用基于兴趣区域的多元回归探索对于每种韵律类型的非规范句子理解至关重要的神经资源。较低的定向注意力能力和较大的下额叶和顶叶损伤预示着较低的理解力，但仅限于具有典型韵律的句子。我们的结果表明，典型的句子韵律可能会利用注意力资源来支持非规范句子的理解，而这种关系可能会在左半球中风后被破坏。