ABSTRACT

This eye-tracking study explored how phonological encoding and speech production planning for successive words are coordinated in adult readers with dyslexia (N = 22) and control readers (N = 25) during rapid automatized naming (RAN). Using an object-RAN task, we orthogonally manipulated the word-form frequency and phonological neighborhood density of the object names and assessed the effects on speech and eye movements and their temporal coordination. In both groups, there was a significant interaction between word frequency and neighborhood density: shorter fixations for dense than for sparse neighborhoods were observed for low- but not for high-frequency words. This finding does not suggest a specific difficulty in lexical phonological access in dyslexia. However, in readers with dyslexia only, these lexical effects percolated to the late processing stages, indicated by longer offset eye-speech lags. We close by discussing potential reasons for this finding, including suboptimal specification of phonological representations and deficits in attention control or in multi-item coordination.

摘要

这项眼动追踪研究探讨了在快速自动命名过程中，患有阅读障碍的成人读者 (N = 22) 和对照读者 (N = 25) 如何协调连续单词的语音编码和语音生成计划(RAN)。使用对象 RAN 任务，我们正交地操纵了对象名称的词形频率和语音邻域密度，并评估了对语音和眼球运动及其时间协调的影响。在两组中，词频和邻域密度之间存在显着的交互作用：对于低频率单词，密集邻域的注视比稀疏邻域的注视时间更短，但对于高频词则不然。这一发现并不表明阅读障碍的词汇语音访问存在特定困难。然而，在仅有阅读障碍的读者中，这些词汇效应渗透到后期加工阶段，表现为更长的偏移眼语滞后。我们通过讨论这一发现的潜在原因来结束，