How do Cortical regions selective for visual scenes develop in human infants?

人类婴儿对视觉场景的选择性皮层区域是如何发育的？

• 批准号: 10299043
• 负责人: Rebecca R Saxe
• 金额: $ 32.78万
• 依托单位: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
• 依托单位国家: 美国
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-21 至 2026-06-30
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10299043
• 关键词: Adult; Age-Months; Area; Behavioral; Benchmarking; Birth; Brain; Brain Injuries; Brain region; Categories; Clinical; Complex; Data; Data Set; Development; Developmental Process; Ecological momentary assessment; Environment; Exposure to; Face; Foundations; Frequencies; Functional Magnetic Resonance Imaging; Future; Goals; Habilitation; Head; Human; Immersion; Individual; Infant; Inherited; Intervention; Investigation; Knowledge; Learning; Life; Light; Literature; Location; Magnetic Resonance Imaging; Measures; Motion; Motor; Nature; Near-Infrared Spectroscopy; Nerve Degeneration; Neurodegenerative Disorders; Neurologist; Neurons; Operative Surgical Procedures; Parietal; Pattern; Perception; Peripheral; Phase; Photic Stimulation; Predisposition; Rehabilitation therapy; Research; Rest; Role; Shapes; Stimulus; Stroke; Structure; System; Techniques; Testing; Time; Visual; Visual Cortex; Visual system structure; Work; aged; awake; base; developmental disease; experience; extrastriate visual cortex; infancy; innovation; insight; neurodevelopment; neuroimaging; novel; preference; rehabilitation strategy; relating to nervous system; remediation; response; skills; statistics; theories; visual information; way finding

Project Summary The goal of the proposed work is to study the typical development of the critical ability to recognize and navigate the local visual environment, or ”scene”, which constitutes the bedrock of a healthy, independent, and productive life. A rich behavioral literature in humans has shown that remarkable spatial and navigational abilities are already develop- ing within the first few years of life. Likewise, extensive neuroimaging work has uncovered a network of brain regions dedicated to scene perception and navigation in adulthood. However, there is key knowledge gap about how these regions develop the human brain, particularly during the first year of life. Here we propose to study the typical devel- opment of scene-selective cortex in the awake infant brain using magnetic resonance imaging (fMRI) and functional near-infrared spectroscopy (fNIRS). Across three aims, we develop and test two competing theoretical frameworks. One framework suggests that early responses to scenes are driven by low-level visual information inherited from earlier visual systems, and that higher-level scene responses are built on these foundations via cumulative passive exposure to visual scenes over time. By contrast, the second framework suggests that early responses to scenes al- ready reflect higher-level information about the navigation-relevant features of scenes, influenced by connectivity with regions beyond the visual system, and that representations of the structure of the scene are specifically enhanced as infants begin to make independent choices of where to go and how. In Aim 1, we will use fMRI in 2-9 month old infants to test when responses to scenes depicting navigational affordances first emerge in the infant cortex; and whether connections guiding the development of the network are primarily from earlier visual areas, or also from areas beyond the visual cortex. In Aim 2, we will use fNIRS and wide-angle immersive displays in 5-11 month old infants to study whether early-emerging functional responses in this system are driven by low-level features (e.g., peripheral visual stimulation) only, or also by higher-level information about the functional relevance of scenes (e.g., for navigation). Finally, in Aim 3, we will quantify infants' ecological passive visual experience with scenes, and how that changes with motor development, in order to ask whether the onset of independent navigation specifically shapes the neural devel- opment of scenes, over and above passive visual experience. The results of this work will yield basic insights into the typical development of cortical scene processing, and shed light on the fundamental debate in development over the relative roles of maturation and experience. This work will also inform clinically focused investigations into how the basic developmental processes studied here go awry in developmental disorders, and hopefully, novel interventions and rehabilitation strategies for individuals who lose these abilities as a result of stroke or neurodegeneration.

项目概要 拟议工作的目标是研究识别和导航关键能力的典型发展 当地的视觉环境，或者说“场景”，构成了健康、独立和富有成效的生活的基石。 丰富的人类行为文献表明，卓越的空间和导航能力已经发展起来—— 同样，广泛的神经影像学工作也揭示了大脑区域的网络。 致力于成年后的场景感知和导航然而，对于这些如何进行，存在着关键的知识差距。 人类大脑的发育区域，特别是在生命的第一年，我们建议研究典型的发育过程。 使用磁共振成像（fMRI）和功能性检查清醒婴儿大脑中的场景选择皮层 近红外光谱（fNIRS）。针对三个目标，我们开发并测试了两个相互竞争的理论框架。 一个框架表明，对场景的早期反应是由继承自的低级视觉信息驱动的。 早期的视觉系统，以及更高级别的场景响应是通过累积被动建立在这些基础上的 相比之下，随着时间的推移，第二个框架表明对场景的早期反应。 准备好反映有关场景导航相关特征的更高级别信息，受与 视觉系统之外的区域，并且场景结构的表示被特别增强为 婴儿开始独立选择去哪里以及如何去 在目标 1 中，我们将在 2-9 个月大的婴儿中使用功能磁共振成像。 测试婴儿皮质何时首次出现对描绘导航可供性的场景的反应； 指导网络发展的连接主要来自早期视觉区域，或者也来自更远的区域 在目标 2 中，我们将使用 fNIRS 和广角沉浸式显示器对 5-11 个月大的婴儿进行研究。 该系统中早期出现的功能反应是否是由低级特征驱动的（例如，周边视觉 仅通过刺激），或者还可以通过有关场景功能相关性的高级信息（例如，用于导航）。 最后，在目标 3 中，我们将量化婴儿的生态被动视觉体验与场景，以及它如何随着场景而变化。 运动发育，以探究独立导航的开始是否具体塑造了神经发育 除了被动视觉体验之外，这项工作的结果将产生对场景的基本见解。 皮层场景处理的典型发展，并阐明了关于皮层场景处理发展的基本争论 这项工作还将为临床重点研究提供信息，以了解成熟度和经验的相对作用。 这里研究的基本发育过程在发育障碍中出错，希望有新的干预措施 以及针对因中风或神经退行性疾病而丧失这些能力的个人的康复策略。