a Department of Communication Disorders , Ariel University , Ariel , Israel.
b The School of Education Bar Ilan University , Ramat Gan , Israel.
Laterality. 2019 Jul;24(4):417-431. doi: 10.1080/1357650X.2018.1533023. Epub 2018 Oct 9.
Previous studies on adults with dyslexia (DYS) have indicated difficulties in the comprehension of figurative language. Using the divided visual field paradigm, the present study investigated the hemispheric processing of idioms among 22 adults with DYS and 21 regular reader (RR) adults. Participants performed a lexical decision task for a target word related to either a literal or a figurative interpretation of an idiom. The results show that whereas the RR group demonstrated a bilateral pattern of hemispheric processing of idiomatic meanings, the DYS group showed a right hemisphere (RH) advantage. Furthermore, both groups demonstrated the typical RH advantage in processing the literal meanings of idioms. Our findings indicate increased recruitment of the RH in dyslexia, probably due to differences in cerebral language areas or weaker LH semantic processing.
先前对成年阅读障碍（DYS）患者的研究表明，他们在理解比喻语言方面存在困难。本研究采用分视场范式，调查了 22 名 DYS 患者和 21 名正常阅读者（RR）成人对成语的半球加工。参与者对与成语的字面或比喻解释相关的目标词执行词汇判断任务。结果表明，RR 组表现出对成语意义的双侧半球加工模式，而 DYS 组表现出右半球（RH）优势。此外，两组在处理成语的字面意义时都表现出典型的 RH 优势。我们的发现表明，阅读障碍症患者更多地利用右半球，这可能是由于大脑语言区域的差异或较弱的左半球语义处理所致。
