DEVELOPMENT OF AUDITORY-VISUAL LOCALIZATION

描述：大多数知觉、认知、情感和语言事件都是 同时指定在不同的感官形式，并分布在 穿越时空空间和时间刺激特征可以是 在各种模式中同样得到充分体现，从而为以下方面提供了重要基础： 多模态表示的异模态属性的集成 事件和对象。经验证据表明，人类婴儿可以 感知这些联运属性中的一些，并可以使用它们来整合 异模态输入大多数证据涉及婴儿的感知， 使用多模态刺激的时间方面，例如同步，持续时间， 速率或节奏。关于这一问题的研究相对较少。 空间因素的跨模态整合，结果仍然模棱两可， 很多案例。鉴于空间整合的多模态事件是一个基本的 这是婴儿日常经验的一部分， 这种能力的发展至关重要。 本项目的目的是进行系统的调查 婴儿对通道间空间关系的反应能力的发展 通过研究对不同程度的多式联运目标的响应能力， 2 - 10个月婴儿的空间分离。头和眼睛 运动将被测量，并将用于研究发展 婴儿反应的差异。一系列的七个实验是 建议测试的各个方面的机密性视觉定位。的 在前人研究的基础上设计了一套实验装置 在成人和动物中的A-V定位。后一项研究将 为解释结果提供重要的基线数据和限制 在这个项目中获得。标准心理物理学方法（种族模型分析） 将被用来建立多模态空间的机制， 一体化进程及其发展。实证工作将是 并辅以建模工作。该模型将纳入经验 结果，并将提供一个框架的实证研究。结果 将：（a）阐明发展变化背后的机制， 对多式联运空间关系的响应，（B）增加了我们对 发展一个过程，使婴儿能够了解 他们的经验的心理统一，（c）帮助进一步发展和 完善感知功能的测量， 在检测异常发育结果中的诊断效用。

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.