Multisensory integration of auditory cues for navigation

用于导航的听觉线索的多感官整合

• 批准号: 10821886
• 负责人: Corey Scott Shayman
• 金额: $ 3.93万
• 依托单位: UNIVERSITY OF UTAH
• 依托单位国家: 美国
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-15 至 2027-09-14
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10821886
• 关键词: Acute; Age; Auditory; Back; Blindness; Brain; Central Scotomas; Chronic; Complex; Computer Models; Cues; Data; Echolocation; Elderly; Environment; Equilibrium; Experimental Designs; Gait; Healthcare; Hearing; Homing; Human; Impairment; Individual; Learning; Locomotion; Longevity; Maps; Methods; Modeling; Motion; Motion Perception; Musculoskeletal Equilibrium; Noise; Participant; Pathology; Perception; Play; Quality of life; Rehabilitation therapy; Role; Scientist; Sensory; Source; Stream; Techniques; Update; Vestibular loss; Vision; Visual; Visual impairment; Weight; Work; age related; behavioral study; healthy aging; improved; multisensory; rehabilitation strategy; sensory integration; sensory substitution; sound; virtual reality; virtual reality simulation; visual map; way finding

Project Summary Spatial navigation is a complex task that requires sensory processing, integration, and the creation of a spatial map. Our project seeks to understand the role of auditory cues in spatial navigation. Traditionally, auditory landmarks have been ignored with scientists looking instead at visual, vestibular, and proprioceptive cues. New behavioral studies point to a human ability to use auditory landmarks in self-motion perception, balance, and gait. Here, we seek to understand the role of auditory spatial landmarks in spatial navigation, assessed by careful experimental manipulation of available sensory cues (auditory, visual, and self-motion cues) during a homing task. We propose two aims to examine the role of audition in spatial navigation. In our first aim, we seek to quantify how audition is integrated with other senses for human spatial encoding and navigation. We propose to examine this in the framework of the maximum likelihood computational model (termed optimal cue-combination model). We hypothesize that humans will use auditory information in an optimal manner, though auditory information will contribute less to the spatial map than visual cues or self-motion cues. In the second aim, we propose to examine the relative weight that individuals with sensory loss place on auditory information. We plan to do this with virtual reality simulations of visual and self-motion sensory impairment in the acute setting. We also plan to examine how individuals having a chronic sensory loss (longstanding low vision or vestibular asymmetry) weight auditory landmarks for navigation. The proposed work will have a significant impact on the field of multisensory integration and help generate potential new rehabilitation strategies for individuals suffering from sensory impairment.

项目摘要 空间导航是一项复杂的任务，需要感觉处理，整合和空间的创造。 地图我们的项目旨在了解听觉线索在空间导航中的作用。传统上，听觉 地标被忽略了，科学家们转而关注视觉、前庭和本体感受线索。新 行为研究指出，人类有能力使用听觉地标的自我运动知觉，平衡， 步态在这里，我们试图了解听觉空间地标在空间导航中的作用，通过仔细的评估， 在归航过程中，对可用的感觉线索（听觉、视觉和自我运动线索）进行实验操作 任务我们提出了两个目的来研究听觉在空间导航中的作用。在我们的第一个目标中，我们寻求 量化听觉如何与人类空间编码和导航的其他感官相结合。我们建议 在最大似然计算模型（称为最佳线索组合）的框架中对此进行检查 模型）。我们假设人类会以最佳的方式使用听觉信息，尽管听觉 信息对空间图的贡献小于视觉线索或自我运动线索。第二个目标，我们 建议检查感官丧失的个体对听觉信息的相对权重。我们计划 通过虚拟现实模拟急性环境下的视觉和自我运动感觉障碍来做到这一点。我们 我还计划研究患有慢性感觉丧失（长期低视力或前庭功能障碍）的人 不对称性）加权听觉地标以用于导航。拟议的工作将对 多感官整合领域，并帮助产生潜在的新的康复策略，为个人的痛苦 感觉障碍