AUDITORY PROCESSING IN HEARING-IMPAIRED CHILDREN

本项目的总体目标是调查 听觉知觉组织的听力损害。获得 结果可能对精炼和 区分听觉处理的概念，这是一个 导致沟通障碍的主要原因 受试者将 代表横截面和纵向组。 交叉- 分组包括200名儿童，100名正常儿童和100名 3至7岁的听力受损者。 纵向 每组包括10名正常儿童和10名听力受损儿童， 随访3 ~ 6岁或4 ~ 7岁。 我们 研究听觉知觉组织的方法将集中在 关于如何确定语音的听觉和语义维度 在儿童的感知过程中结合在一起。 探讨 这个问题，一个儿科选择性注意任务，利用两者 听觉言语与语义言语的冲突与一致 维度已经构建。 任务是一个儿科听觉 类似于众所周知的成人视觉程序，称为 斯特鲁普测试 我们预测，系统的变化， 语音的语义维度将与语音的处理相互作用。 听觉维度按照“分析者”模型， 选择性注意多维信号。 试点数据 新开发的小儿听觉“Stroop”任务表明， 听力正常和严重听力受损的儿童 听觉和语义之间的不同互动模式 演讲的维度 关于一系列正常的进一步数据- 听力和听力受损的科目，代表了广泛的 不同类型和程度的听力障碍，将 阐述这种互动模式的特征。 结果 建议的项目应提供以下知识：1） 正常知觉组织的发展， （2）在多大程度上发展的知觉处理， 知觉组织受到异常经验的影响， 听觉刺激; 3）语义加工的自动性 年幼的孩子。 更好地理解正常知觉 开发可能对设计具有重要的临床意义 为发展中国家的儿童提供的 知觉处理的异常 更好地了解 听力损伤对知觉组织的影响可能是 重要的是提高我们促进发展的能力， 听力受损儿童的正常沟通能力。

The overall goal of this project is to investigate the effect of hearing impairment on auditory perceptual organization. Obtained results may have important implications for refining and differentiating the concept of auditory processing, which is a primary contributor to communicative disorder. Subjects will represent both cross-sectional and longitudinal groups. Cross- sectional groups will consist of 200 children, 100 normal and 100 hearing-impaired, from 3 through 7 years of age. Longitudinal groups will consist of 10 normal and 10 hearing-impaired children, followed from either 3 to 6 years or from 4 to 7 years of age. Our approach to studying auditory perceptual organization will focus on determining how the auditory and semantic dimension of speech are combined in perceptual processing by children. To investigate this issue, a pediatric selective attention task that utilizes both conflict and congruence between auditory and semantic speech dimensions has been constructed. The task is a pediatric auditory analog of the well-known adult, visual procedure, termed the "Stroop" test. We predict that systematic variation in the semantic dimension of speech will interact with processing of the auditory dimension in accordance with the "analyzer" model of selective attention for multidimensional signals. Pilot data on the newly developed pediatric auditory "Stroop" task indicated that normal-hearing and severely hearing-impaired children exhibit different patterns of interaction between the auditory and semantic dimensions of speech. Further data on a large series of normal- hearing and hearing-impaired subjects, representing a broad range of different types and degrees of hearing impairment, will elaborate characteristics of this pattern of interaction. Results of the proposed project should provide knowledge about 1) the development of normal perceptual organization, an important aspect of perceptual processing, 2) the extent to which development of perceptual organization is influenced by abnormal experience with auditory stimulation and 3) the automaticity of semantic processing young children. Better understanding of normal perceptual development may have important clinical implications for the design of remediation programs for children with developmental abnormalities in perceptual processing. Better understanding of the effect of hearing impairment on perceptual organization may be important in improving our ability to promote the development of normal communication skills in hearing-impaired children.