Biomimetic sensory augmentation

仿生感官增强

• 批准号: 395696283
• 负责人: Dr. Frank Schumann
• 金额: --
• 依托单位: Institut de la Vision Paris
• 依托单位国家: 德国
• 项目类别: Research Fellowships
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/395696283?language=en
• 关键词: Biomimetic; sensory; augmentation

This proposal investigates the integration of an artificial ‘magnetic’ sensory signal into human spatial perception. We have recently developed a sensory augmentation device that indicates the orientation of the head to geomagnetic north. The device uses a novel biomimetic coding scheme that ‘piggy-backs’ the output of a head-based compass on the lower-level sensory characteristics of distal sounds coming from a direction. Our recent work shows that under laboratory conditions this signal integrates rapidly with the human perception of vestibular space. However, under natural, ecological, conditions, spatial perception combines information from multiple internal and external sensory channels as well as information derived from internal models of the sensory consequences of actions. Thus while the laboratory finding of the ability to integrate magnetic sensory signals with vestibular perception is promising, it might not be sufficient to impact on spatial perception also under natural conditions. The present project thus (1) investigates if bio-mimetic magnetic signals can also be integrated into spatial perception under more ecological conditions, and (2) investigates possible mechanisms of integration. A set of experiments examines whether integration of a biomimetic magnetic signal is based on signal reliability as predicted by Bayesian schemes; whether integration occurs in the presence of reliable signals of proprioception and active motor commands; whether a biomimetic magnetic signal can impact spatial orientation in ecological external environments, and what cortical processes might underlie the integration of a biomimetic augmentation signal using neuro-imaging techniques (fMRI).

本研究探讨了人工“磁性”感官信号与人类空间感知的整合。我们最近开发了一种感官增强装置，可以指示头部对地磁北方的方向。该设备使用了一种新颖的仿生编码方案，该方案“搭载”了基于头部的指南针的输出，根据来自某个方向的远端声音的低级感官特征进行输出。我们最近的工作表明，在实验室条件下，这种信号与人类对前庭空间的感知迅速整合。然而，在自然的、生态的条件下，空间感知综合了来自内部和外部多个感觉通道的信息，以及来自行为的感觉后果的内部模型的信息。因此，虽然实验室发现将磁性感觉信号与前庭感知相结合的能力是有希望的，但在自然条件下，它可能不足以影响空间感知。因此，本项目(1)研究仿生磁信号是否也可以在更生态的条件下整合到空间感知中；(2)研究整合的可能机制。一组实验检验了仿生磁信号的集成是否基于贝叶斯方案预测的信号可靠性；整合是否发生在可靠的本体感觉信号和主动运动指令存在的情况下；仿生磁信号是否会影响生态外部环境中的空间定向，以及使用神经成像技术（fMRI）整合仿生增强信号的皮层过程可能是什么。