长期的语音表达在童年中期就变成了视听
Natalya Kaganovich1, Jennifer Schumaker2, Sharon Christ3
1Department of Speech, Language, and Hearing Sciences, Purdue University, 715 Clinic Drive West Lafayette, IN, 47907-2038, USA; Department of Psychological Sciences, Purdue University, 703 Third Street, West Lafayette, IN, 47907-2038, USA.
孩子 孩子 孩子 孩子
科学领域:
- 发育神经科学的发展神经科学.
- 听觉和语音感知 听觉和语音感知
- 认知发展 认知发展
背景情况:
- 成年人的语音表达是视听的,包含口腔形状信息.
- 视听处理在青春期晚期成熟,这表明儿童的发育变化.
- 了解视听语音表示的发展轨迹至关重要.
研究的目的:
- 研究儿童视听语音表现的发育状态.
- 为了比较8-9岁的孩子和11-12岁的孩子的语音处理,使用一个视听奇怪的范式.
- 确定语音表现成为完全视听的年龄.
主要方法:
- 利用一种视听奇怪的范式,使用视觉 (面部) 和听觉 (元音) 刺激.
- 在中性和视听违规条件下比较神经反应 (MMN和P3组件).
- 检查了两个年龄组:8-9岁和11-12岁的孩子.
主要成果:
- 11-12岁的孩子表现出与成年人类似的模式:在视听违规条件下,MMN更大.
- 8-9岁的孩子仅在中性条件下表现出后部MMN.
- 较小的孩子 (8-9) 在视听违规条件中具有较大的P3,表明注意力被捕捉,但缺乏成熟的MMN反应.
结论:
- 语音表现似乎在8-9岁和11-12岁之间成为完全视听.
- 小孩子的自动语音处理 (MMN) 可能还没有整合视觉语音线索.
- 年龄较大的儿童和成年人表现出综合的视听声学表现.
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