Department of Hearing and Speech Sciences, University of Maryland, College Park.
J Speech Lang Hear Res. 2021 May 11;64(5):1636-1649. doi: 10.1044/2021_JSLHR-20-00319. Epub 2021 Apr 22.
Purpose Children with cochlear implants (CIs) are more likely to struggle with spoken language than their age-matched peers with normal hearing (NH), and new language processing literature suggests that these challenges may be linked to delays in spoken word recognition. The purpose of this study was to investigate whether children with CIs use language knowledge via semantic prediction to facilitate recognition of upcoming words and help compensate for uncertainties in the acoustic signal. Method Five- to 10-year-old children with CIs heard sentences with an informative verb () or a neutral verb () preceding a target word (). The target referent was presented on a screen, along with a phonologically similar competitor (). Children's eye gaze was recorded to quantify efficiency of access of the target word and suppression of phonological competition. Performance was compared to both an age-matched group and vocabulary-matched group of children with NH. Results Children with CIs, like their peers with NH, demonstrated use of informative verbs to look more quickly to the target word and look less to the phonological competitor. However, children with CIs demonstrated less efficient use of semantic cues relative to their peers with NH, even when matched for vocabulary ability. Conclusions Children with CIs use semantic prediction to facilitate spoken word recognition but do so to a lesser extent than children with NH. Children with CIs experience challenges in predictive spoken language processing above and beyond limitations from delayed vocabulary development. Children with CIs with better vocabulary ability demonstrate more efficient use of lexical-semantic cues. Clinical interventions focusing on building knowledge of words and their associations may support efficiency of spoken language processing for children with CIs. Supplemental Material https://doi.org/10.23641/asha.14417627.
目的 与正常听力(NH)的同龄儿童相比,植入人工耳蜗(CI)的儿童在口语方面可能更具挑战性,新的语言处理文献表明,这些挑战可能与口语识别延迟有关。本研究旨在调查 CI 儿童是否通过语义预测来利用语言知识来促进对即将到来的单词的识别,并帮助补偿声学信号中的不确定性。 方法 5 至 10 岁的 CI 儿童在目标词之前听到带有信息动词()或中性动词()的句子()。目标参照与语音相似的竞争者()一起显示在屏幕上。记录儿童的眼动以量化目标词的访问效率和语音竞争的抑制。将表现与同龄的 NH 儿童组和词汇匹配的 NH 儿童组进行比较。 结果 CI 儿童与 NH 同龄儿童一样,利用信息动词快速注视目标词,而较少注视语音竞争者。但是,与 NH 同龄人相比,CI 儿童在利用语义线索方面的效率较低,即使在词汇能力匹配的情况下也是如此。 结论 CI 儿童使用语义预测来促进口语识别,但与 NH 儿童相比,使用程度较低。 CI 儿童在预测性口语处理方面面临的挑战超出了词汇发展延迟的限制。具有更好词汇能力的 CI 儿童表现出更有效地利用词汇语义线索。重点关注建立词汇及其关联知识的临床干预措施可能会支持 CI 儿童口语处理的效率。 补充材料 https://doi.org/10.23641/asha.14417627.