Silkes JoAnn P
Department of Speech and Hearing Sciences, University of Washington, Seattle.
J Speech Lang Hear Res. 2018 Mar 15;61(3):690-712. doi: 10.1044/2017_JSLHR-L-17-0192.
Masked priming has been suggested as a way to directly target implicit lexical retrieval processes in aphasia. This study was designed to investigate repeated use of masked repetition priming to improve picture naming in individuals with anomia due to aphasia.
A single-subject, multiple-baseline design was used across 6 people with aphasia. Training involved repeated exposure to pictures that were paired with masked identity primes or sham primes. Two semantic categories were trained in series for each participant. Analyses assessed treatment effects, generalization within and across semantic categories, and effects on broader language skills, immediately and 3 months after treatment.
Four of the 6 participants improved in naming trained items immediately after treatment. Improvements were generally greater for items that were presented in training with masked identity primes than items that were presented repeatedly during training with masked sham primes. Generalization within and across semantic categories was limited. Generalization to broader language skills was inconsistent.
Masked repetition priming may improve naming for some individuals with anomia due to aphasia. A number of methodological and theoretical insights into further development of this treatment approach are discussed.
掩蔽启动被认为是一种直接针对失语症患者内隐词汇检索过程的方法。本研究旨在探讨重复使用掩蔽重复启动对失语症所致命名性失语患者图片命名能力的改善情况。
对6名失语症患者采用单被试多基线设计。训练包括反复呈现与掩蔽身份启动或假启动配对的图片。为每位参与者依次训练两个语义类别。分析评估了治疗效果、语义类别内和类别间的泛化情况以及治疗后即刻和3个月后对更广泛语言技能的影响。
6名参与者中有4名在治疗后即刻对训练项目的命名能力有所提高。与在训练中反复呈现掩蔽假启动的项目相比，在训练中呈现掩蔽身份启动的项目的改善通常更大。语义类别内和类别间的泛化有限。对更广泛语言技能的泛化并不一致。
掩蔽重复启动可能会改善一些失语症所致命名性失语患者的命名能力。讨论了对该治疗方法进一步发展的一些方法学和理论见解。
