Psychophysical Research on Auditory/Visual Space Perception and Navigation

听觉/视觉空间感知和导航的心理物理学研究

• 批准号: 8575577
• 负责人: Zijiang He
• 金额: $ 28.56万
• 依托单位: UNIVERSITY OF LOUISVILLE
• 依托单位国家: 美国
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-07-01 至 2015-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8575577
• 关键词: 3-Dimensional; Address; Affect; Auditory; Auditory system; Basic Science; Code; Development; Distance Perception; Environment; Equilibrium; Future; Goals; Hearing; Human; Impairment; Individual; Judgment; Knowledge; Lead; Location; Memory; Methods; Modality; Outcome; Outcomes Research; Perception; Performance; Play; Population; Process; Psychophysics; Public Health; Relative (related person); Research; Resolution; Role; Sensory; Short-Term Memory; Space Perception; Specific qualifier value; Stimulus; Techniques; Technology; Testing; Time; Translational Research; Validation; Vision; Visual; Visual impairment; Visual system structure; Visuospatial; Work; base; directed attention; improved; innovation; interest; multisensory; novel; public health relevance; spatial integration; virtual; visual information; way finding

DESCRIPTION (provided by applicant): Our normal everyday perception of 3-dimensional space and our abilities to interact and navigate within the space require integration of information from multiple sensory modalities. The integration of distance/depth information in the intermediate range (2 - 20 m), where visual and auditory modalities provide the primary inputs, is not well understood, however. The long-term goal of this project is a complete understanding of how auditory and visual information is integrated to form distance percepts that can support accurate orientation and navigation in both normal and sensory-impaired populations. The objective of this application is to test and refine an innovative conceptual framework that represents the integration processes in a normal-hearing, normal-vision population. The central hypothesis guiding this framework is that distance perception, unlike the perception of direction, requires additional contextual or background information about the environment that is beyond that provided by the object itself. This background representation can act like a frame of reference for coding distance. For multisensory distance input, object, contextual and background information must be integrated across modalities. But since all the information is not necessarily available at the same time, memory must be involved in the integration process. The rationale that underlies the proposed research is that once a conceptual framework for auditory/visual distance integration has been specified and validated for normal populations, new and innovative approaches can be applied to understanding and minimizing the impact of sensory impairments on spatial perception and navigation. This hypothesis will be tested by pursuing two specific aims: 1) Reveal an integrated auditory and visual reference frame for distance perception based on the environmental background. 2) Determine the role of working memory in auditory/visual distance perception. These aims will be addressed by testing human distance judgment and navigation performance under conditions in which the contributions of the contextual information, background information or working memory are manipulated. Virtual and real stimulus manipulation techniques will allow for novel pairing of auditory and visual information that will be used to evaluate and refine the proposed framework. Development and validation of this framework will be a significant contribution because it will provide a better understanding of how humans are able to successfully integrate auditory and visual information to perform spatial tasks in the environment. Moreover, it will provide a vehicle for future studies to advance the field of multisensory space perception. The proposed research is relevant to public health because it will lead to a better understanding of how auditory or visual impairment affects multisensory space perception. Ultimately, this knowledge may inform the development of new strategies for assisting or enhancing degraded spatial information to improve orientation and navigation abilities in visually- and/or hearing-impaired populations.

描述（由申请人提供）：我们对三维空间的正常日常感知以及我们在空间内进行交互和导航的能力需要从多种感觉方式整合信息。但是，尚不清楚在中间范围内（2-20 m）的距离/深度信息的整合，其中视觉和听觉方式提供了主要输入。该项目的长期目标是完全理解听觉和视觉信息的集成方式，以形成距离知觉，以支持正常和感觉障碍群体中的准确方向和导航。该应用的目的是测试和完善一个创新的概念框架，该框架代表正常听力，正常视觉人群中的整合过程。指导该框架的中心假设是，与方向的感知不同，距离感知需要有关对象本身提供的环境的其他上下文或背景信息。该背景表示形式可以像编码距离的参考框架。对于多感官距离输入，必须跨模式集成对象，上下文和背景信息。但是，由于所有信息不一定同时可用，因此必须参与集成过程中的内存。拟议的研究基础的理由是，一旦指定了一个听觉/视觉距离集成的概念框架，并已针对正常人群进行了验证，则可以将新的和创新的方法应用于理解和最小化感觉障碍对空间感知和导航的影响。该假设将通过追求两个具体目的来检验：1）根据环境背景揭示距离感知的集成听觉和视觉参考框架。 2）确定工作记忆在听觉/视觉距离感知中的作用。这些目标将通过在操纵上下文信息，背景信息或工作记忆的贡献的条件下测试人类距离判断和导航绩效来解决这些目标。虚拟和真实的刺激操纵技术将允许新颖的听觉和视觉信息配对，这些信息将用于评估和完善所提出的框架。该框架的开发和验证将是一个重要的贡献，因为它将更好地理解人类如何成功整合听觉和视觉信息以在环境中执行空间任务。此外，它将为将来的研究提供一种工具，以推动多感觉空间感知的领域。拟议的研究与公共卫生有关，因为它将更好地理解听觉或视觉障碍如何影响多感觉空间感知。最终，这些知识可能会为发展或增强降级的空间信息的新策略的制定提供信息，以提高视觉和/或听力障碍人群中的方向和导航能力。