PDF(Pubmed)
Abstract：
Speech production in aphasia is often described as \"effortful\", though the consequences of consistent, high degrees of cognitive effort have not been explored. Using recent work on mental effort as a theoretical framework, the present study examined how effort-related fatigue produces decrements in performance in picture naming among participants with post-stroke aphasia. We analyzed three data sets from prior studies where participants completed a large picture naming test. Decreasing naming accuracy across trials was statistically significant in two of the three samples. There were also significant effects of practice (better performance on a second test administration), word frequency (better performance for more frequent words), and word length (better performance for shorter words). These results are the first concrete demonstration of fatigue affecting performance on a language task in post-stroke aphasia. They open a new avenue for research on mental effort/fatigue with potential implications for aphasia assessment, treatment, and management.
摘要：
失语症中的言语产生通常被描述为“努力”，虽然一致的后果，尚未探索高度的认知努力。使用最近关于精神努力的工作作为理论框架，本研究调查了在卒中后失语症参与者中,努力相关疲劳如何导致图片命名表现下降.我们分析了来自先前研究的三个数据集，其中参与者完成了大型图片命名测试。在三个样本中的两个样本中，整个试验的命名准确性下降具有统计学意义。实践也有显着的效果（在第二次测试管理中表现更好），词频（更频繁的单词性能更好），和单词长度（较短单词的性能更好）。这些结果是中风后失语症中疲劳影响语言任务表现的第一个具体证明。他们为研究精神努力/疲劳开辟了一条新途径，对失语症评估有潜在的影响，治疗,和管理。
