Recognition of shape by vision and touch

通过视觉和触觉识别形状

• 批准号: 10575067
• 负责人: DAVID L SHEINBERG
• 金额: $ 43.86万
• 依托单位: BROWN UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-15 至 2024-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10575067
• 关键词: Address; Appearance; Area; Behavior; Behavioral; Behavioral Paradigm; Brain; Categories; Cognitive; Complement; Complex; Computers; Development; Devices; Ensure; Familiarity; Foundations; Functional Magnetic Resonance Imaging; Generations; Goals; Hand; Human; Individual; Injury; Investigation; Lateral; Learning; Light; Link; Magnetic Resonance Imaging; Methods; Modality; Nature; Neural Pathways; Neurons; Participant; Pattern; Performance; Persons; Physical shape; Play; Post-Traumatic Stress Disorders; Primates; Process; Psychologist; Recovery; Rehabilitation therapy; Research; Resolution; Role; Schizophrenia; Sensory; Shapes; Stimulus; Stroke; Structure; Surface; System; Testing; Touch sensation; Training; Vision; Visual; Visual Cortex; Visual Fields; Visual Hallucination; behavioral study; blind; design; experience; experimental study; extrastriate visual cortex; haptics; human subject; impression; improved; interest; multimodality; neuroimaging; neuromechanism; neurophysiology; nonhuman primate; novel; novel strategies; object recognition; prototype; receptor; relating to nervous system; response; sensory system; sound; stem; visual information; visual object processing; visual processing; visual stimulus

Abstract/Summary The goal of this project is to understand how objects are recognition by vision and touch. While considerable progress has been made in our understanding how visual information about shape can access higher brain structures involved in recognizing objects and directing action, circuits by which the same information derived by touch are not as advanced. This is an important question, because we still do not know how objects are represented in the brain, and in particular, how a unified representation of these objects can be derived from multiple senses. The role vision plays in orchestrating this integration is an open question: Do we literally see with our hands? And is this true even for those without normal vision? The goal of this exploratory project is to develop a new approach for addressing these questions. In particular, we aim to develop a unique “haptic display”, built to be MRI safe and capable of presenting novel physical shapes that can be interleaved with visual stimuli in behavioral studies (Aim 1). In Aim 2, we use this device in a behavioral paradigm to test the hypothesis that familiarity for specific exemplars can be learned through training and improve behavioral performance for shape matching, taking advantage of the device’s ability to generate novel exemplars. We will also establish if learning has equivalent benefits for unimodal and crossmodal identification. These experiments will clarify the role of familiarity in haptic processing and provide an empirical foundation for Aim 3, which is designed to address an outstanding question about the interaction between haptic exploration and visual cortical areas, and the conditions under which this form of crossmodal activation is observed. Together, these studies will both introduce a new paradigm for approaching the understudied problem of haptic recognition, and attempt to link fields of visual and haptic processing in search of an answer to the longstanding question of how sensory information about single objects converges to generate impressions of unified wholes. Successful completion of these aims will provide a key starting point for the first systematic neurophysiological investigations of multi-modal object recognition at the single neuron level. This has significant implications for understanding the rich interplay between sensory systems in normal recognition and the recovery and rehabilitation of sensory function following injury or stroke.

摘要/概要 这个项目的目标是了解物体是如何通过视觉和触觉识别的。虽然数量可观， 关于形状的视觉信息如何进入高级大脑的理解已经取得了进展 参与识别物体和指导行动的结构，同样的信息来源于电路 并没有那么先进。这是一个重要的问题，因为我们仍然不知道物体是如何 在大脑中表示，特别是，如何从这些对象的统一表示中导出 多重感官愿景在协调这种整合中所扮演的角色是一个悬而未决的问题：我们真的看到了吗？ 用我们的双手？即使对于那些没有正常视力的人来说，这也是真的吗？这个探索性项目的目标是 为解决这些问题开发一种新的方法。特别是，我们的目标是开发一种独特的“触觉 显示器”，被构建为MRI安全的，并且能够呈现可以与 行为研究中的视觉刺激（目标1）。在目标2中，我们在行为范例中使用该设备来测试 假设对特定范例的熟悉可以通过训练和改善行为 形状匹配的性能，利用设备的能力，以产生新的样本。我们 还将确定学习是否对单模态和跨模态识别具有等同的益处。这些 实验将阐明熟悉性在触觉加工中的作用，并为Aim提供经验基础 3，旨在解决有关触觉探索之间交互的悬而未决的问题 和视觉皮层区域，以及观察到这种形式的跨模态激活的条件。 总之，这些研究都将引入一个新的范式，接近欠研究的问题， 触觉识别，并试图在寻找答案的视觉和触觉处理的链接领域， 关于单一物体的感官信息如何聚合产生印象的长期问题 统一的整体。这些目标的成功完成将为第一个系统性的 在单神经元水平上对多模态物体识别的神经生理学研究。这 对理解正常识别中感觉系统之间丰富的相互作用具有重要意义 以及损伤或中风后感觉功能的恢复和康复。