探索的儿童在图片命名中的目标词的激活:来自事件相关潜力的证据
1Department of Communication Sciences & Disorders, University of South Florida, Tampa.
概括
与典型的流利儿童 (TFC) 相比,吃的儿童 (CWS) 在图片命名过程中表现出增强的语义处理. 这表明CWS中的目标词激活效率低下,影响语言处理.
科学领域:
- 神经科学是一个神经科学.
- 语音和语言病理学 语言病理学
- 发展心理学 发展心理学
背景情况:
- 吃会影响语言流性,可能涉及认知处理的差异.
- 与事件相关的潜能 (ERP) 提供了对语言产生神经动态的洞察.
研究的目的:
- 调查的儿童 (CWS) 与典型的流利儿童 (TFC) 在图片命名期间的目标词激活.
- 在图片命名任务中,探索CWS和TFC之间的事件相关潜力 (ERP),特别是N400组件的差异.
主要方法:
- 在18个CWS和16个TFC中利用了图片命名任务与探针词识别相结合.
- 记录ERP以测量脑活动,以响应相同或无关的探测词在图片呈现后.
- 分析了N400初始化效应和N400前的ERP组件.
主要成果:
- 观察到N400初始化,这表明当探测词与图片名称相匹配时,语义便利化.
- 与TFC相比,在CWS中发现了更大的N400原始效应.
- 在CWS.中注意到预期处理 (N400前组件) 的减少效应.
结论:
- 在CWS中更大的N400初始化表明在图片命名期间更广泛的语义处理.
- 在CWS中减少预期处理可能表明在形成词汇或语音预测方面存在困难.
- 这些发现表明,在口吃的儿童中,潜在的低效的目标词激活.
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