Department of Communication Science and Disorders, School of Health and Rehabilitation Sciences, University of Pittsburgh, Pittsburgh, PA, USA.
VA Pittsburgh Healthcare System, Pittsburgh, PA, USA.
Cogn Neuropsychol. 2019 Oct-Dec;36(7-8):313-335. doi: 10.1080/02643294.2019.1656604. Epub 2019 Aug 26.
People possess significant knowledge about how real-world events typically unfold. Such connects action and object knowledge, is essential for multiple stages of language processing, and may be impaired in neurological conditions like aphasia. However, current assessments are not well designed for measuring this knowledge. This study presents and tests a novel measure of event-related semantic memory. Task-performance data were collected from unimpaired adults across the lifespan and a sample of stroke survivors with aphasia. Individuals with aphasia also completed measures of language processing and action-/object-related semantic memory, to establish the novel measure's convergent validity. Results demonstrate that performance on the event-knowledge measure correlated with action and object semantic-memory measures and was also associated with a broader range of language-processing performance than other semantic-memory measures. These findings suggest that the novel measure can be used to detect the presence and impact of event-knowledge impairments in neurological conditions.
人们对现实世界事件的典型展开方式拥有重要的知识。这种连接动作和对象知识的知识对于语言处理的多个阶段至关重要，并且在像失语症这样的神经疾病中可能会受到损害。然而，目前的评估方法并不适合衡量这种知识。本研究提出并测试了一种新的事件相关语义记忆测量方法。任务表现数据是从终身未受影响的成年人和患有失语症的中风幸存者样本中收集的。失语症患者还完成了语言处理以及动作/对象相关语义记忆的测量，以确定新测量方法的收敛效度。结果表明，事件知识测量的表现与动作和对象语义记忆测量相关，并且与更广泛的语言处理表现相关，而与其他语义记忆测量相比。这些发现表明，新的测量方法可用于检测神经疾病中事件知识损伤的存在和影响。
