Learning Shape Representation in Somatosensory Cortex and Their Applications to Upper Limb Prosthetics

学习体感皮层的形状表征及其在上肢假肢中的应用

• 批准号: 1057644
• 负责人: Ralph Etienne-Cummings
• 金额: $ 19.6万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-10-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1057644&HistoricalAwards=false
• 关键词: Learning; Shape; Representation; Somatosensory; Cortex

Project Abstract: 1057644The human hand, wrist and arm make up one of the most complex portions of the human body. Using our arms and hands, humans are able to perform extremely complex functions, ranging from the delicate and dexterous tasks involved in artistic design, through dynamic ones involved in playing musical instruments, to forceful ones involved in sports and labor. Scientific studies demonstrate that, even without seeing our hands, a person can effortlessly recognize hundreds of objects with his hands. Unfortunately, none of the arm and hand prosthetics that have been developed to-date are remotely capable of providing touch sensation that approaches that of the natural limbs. Yet, it is known that the touch sensation is indispensable for humans to effectively manipulate and explore objects. So it is a challenge is to assimilate amputees into society and provide them the tools to contribute to the workforce unless they are provided prosthetics limbs that move by thought, as well as feel what the prosthetic hand touches. This EAGER proposal specifically aims to improve our scientific knowledge of how touch is represented and learned by the brain, develop electronic systems that can be implanted to communicate touch directly to the brain, and to test the effectiveness of providing the sensation of touch to a monkey by circumventing its arm and communicating directly to the brain. If successful, this high-risk/high-pay-off project could make Luke Skywalker's replacement arm in Star Wars: The Empire Strikes Back a reality.This project will develop new transdisciplinary knowledge involving neuroscience and engineering. The goal is to record and stimulate directly from the parts of the brain where the sense of touch is normally represented. Current research shows that normal perception of touch is provided by the activity of large groups of brain cells (i.e. neurons). The Investigators will study the possibility of using electrical stimulation to restore the sense of touch to amputees in the same way that cochlear implants restore hearing to the deaf or visual implants the sense of vision to the blind. They plan to exploit the natural representations of the brain and to stimulate, using new electronic circuitry, large groups of neurons that represent movement and from in the animals brain. Ultimately this research will lead to an understanding of how to recreate the feel of objects. Throughout this work, the investigators will train students to have unique neuroscience, biomedical, and engineering skills, a combination of which is invaluable to the modern high-tech health related workforce. They plan to train both undergraduate and graduate students and expose K-12 students who regularly rotate through their laboratories to the research.

项目摘要：1057644人类的手、手腕和手臂是人体最复杂的部位之一。使用我们的手臂和手，人类能够执行极其复杂的功能，从艺术设计中涉及的精细和灵活的任务，到演奏乐器的动态任务，再到参与运动和劳动的强有力的任务。科学研究表明，即使看不到我们的手，一个人也可以毫不费力地用手识别数百个物体。不幸的是，到目前为止，已经开发出的手臂和手假体都不能提供接近自然肢体的触觉。然而，众所周知，触觉对于人类有效地操纵和探索物体是不可或缺的。因此，让截肢者融入社会，并为他们提供为劳动力做出贡献的工具是一项挑战，除非为他们提供假肢，这些假肢可以通过思想移动，并感受到假手触摸的东西。这项热切的提议特别旨在提高我们对大脑如何表示和学习触摸的科学知识，开发可以植入的电子系统，将触摸直接传递到大脑，并测试通过绕过猴子的手臂直接与大脑交流来提供触摸感觉的有效性。如果成功，这个高风险/高回报的项目可能会让卢克·天行者在《星球大战：帝国反击》中的替代手臂成为现实。这个项目将开发涉及神经科学和工程学的新的跨学科知识。其目标是直接从大脑中正常代表触觉的部分进行记录和刺激。目前的研究表明，正常的触摸知觉是由大量脑细胞(即神经元)的活动提供的。研究人员将研究使用电刺激恢复截肢者触觉的可能性，就像植入人工耳蜗恢复聋人的听力或视觉植入盲人的视觉一样。他们计划利用大脑的自然表征，并使用新的电子电路来刺激动物大脑中代表运动和运动的大群神经元。最终，这项研究将导致对如何重现物体感觉的理解。在这项工作中，研究人员将培训学生拥有独特的神经科学、生物医学和工程技能，这些技能的结合对现代高科技健康相关劳动力来说是无价的。他们计划培训本科生和研究生，并让经常在实验室轮换的K-12学生接触这项研究。