DEVELOPMENT OF AUDITORY-VISUAL LOCALIZATION

描述：大多数感知、认知、情感和语言事件都是 在不同的感觉形式中同时指定，并分布在 跨越空间和时间。空间和时间刺激特征可以是 在不同的模式中表现得同样好，因此为 多通道表征的异峰属性整合 事件和对象。经验证据表明，人类婴儿可以 感知其中的一些多式联运属性，并可以使用它们来集成 异模输入。这些证据大多与婴儿的知觉和 多模式刺激的时间方面的使用，例如同步、持续时间 速度，或节奏。目前关于脑血管紧张素转换酶的作用研究相对较少 跨模式整合中的空间因素，结果仍然不明确 很多情况下。鉴于空间整合的多模式事件是一个基本的 婴儿日常经验的一部分，理解过程 这些能力的发展是至关重要的。 本项目的目的是进行系统的调查 婴幼儿对多式联运空间关系反应能力的发展 通过研究对具有不同程度的多式联运目标的响应 2至10个月大婴儿的空间分离。头和眼 运动将被测量，并将被用于研究发育 婴儿反应能力的差异。一系列的七个实验是 建议对视听定位的各个方面进行测试。这个 根据前人的研究成果，设计了实验装置 A-V在人类成人和动物中定位的研究。因此，后一项研究将 提供重要的基准数据和约束条件以解释结果 在这个项目中获得的。标准心理物理学方法(种族模型分析) 将被用来建立多模式空间的基础机制 一体化进程及其发展。经验性工作将是 辅之以建模工作。该模型将纳入经验性的 结果，并将为实证研究提供一个框架。结果是 将：(A)阐明以下发展变化背后的机制： 对多式联运空间关系的响应性，(B)增加我们对 发展一个过程，使婴儿能够了解 心理上的统一，和(C)有助于进一步发展和 改进感知功能的测量，这些测量已经被证明具有 在检测异常发育结局方面的诊断效用。

DESCRIPTION: Most perceptual, cognitive, affective, and linguistic events are specified concurrently in different sensory modalities and are distributed across space and time. Spatial and temporal stimulus features can be represented equally well across modalities and thus provide a major basis for the integration of the heteromodal attributes of multimodally represented events and objects. Empirical evidence indicates that human infants can perceive some of these intermodal attributes and can use them to integrate heteromodal inputs. Most of this evidence concerns infants' perception and usage of temporal aspects of multimodal stimuli, such as synchrony, duration, rate, or rhythm. There has been relatively little research on the role of spatial factors in crossmodal integration, and the results remain equivocal in many cases. Given that spatially integrated multimodal events are a fundamental part of the infant's everyday experience, understanding the processes underlying the development of such abilities is critical. The purpose of the current project is to carry out a systematic investigation of the development of infants' responsiveness to intermodal spatial relations by studying responsiveness to intermodal targets with varying degrees of spatial separation in infants between 2 and 10 months of age. Head- and eye movements will be measured and will be used to investigate developmental differences in infants' responsiveness. A series of seven experiments is proposed to test various aspects of auditory-visual localization. The experimental apparatus has been designed in accordance with previous research of A-V localization in human adults and animals. The latter research will thus provide important baseline data and constraints of for interpreting the results obtained in this project. Standard psychophysical methods (race model analysis) will be employed to establish the mechanisms underlying the multimodal spatial integration process and its development. The empirical work will be complemented by modeling work. The model will incorporate the empirical results, and will provide a framework for the empirical research. The results will: (a) explicate mechanisms underlying the developmental changes in responsiveness to intermodal spatial relations, (b) add to our understanding of the development of a process that enables infants to learn about the psychological unity of their experience, and (c) help further develop and refine measures of perceptual functioning that already have proved to have diagnostic utility in detecting aberrant developmental outcomes.