仿生研究洛蝗视神经,实现机器人快速避障
A Bio-Inspired Research Paradigm of Collision Perception Neurons Enabling Neuro-Robotic Integration: The LGMD Case
- 基于洛蝗视神经的生物启发式避障机制
- 在地面与空中机器人中实现高效碰撞规避
- 适合神经机器人、智能感知系统研究者
与人类视觉相比,蝗虫视觉系统仅用数十万神经元和少数神经节就实现了快速精准的碰撞检测,极具效率。研究发现其视叶中的大型运动检测神经元(LGMD)能特异性响应逼近物体。自20世纪70年代起,随着对LGMD功能的深入理解,其神经电路的计算建模与机器人应用同步发展,相互促进。如今,基于LGMD模型的系统显著提升了移动机器人(包括地面与空中机器人)的避障能力。本文从神经科学、计算建模和机器人三方面综述最新进展,强调一种生物可解释的研究范式:神经科学发现推动实际应用,应用反馈又反哺理论深化。该范式已趋于成熟,具有跨领域扩展潜力,有助于理解其他运动敏感神经回路的建模与应用。
原文摘要 · Abstract (English)
Compared to human vision, locust visual systems excel at rapid and precise collision detection, despite relying on only hundreds of thousands of neurons organized through a few neuropils. This efficiency makes them an attractive model system for developing artificial collision-detecting systems. Specifically, researchers have identified collision-selective neurons in the locust's optic lobe, called lobula giant movement detectors (LGMDs), which respond specifically to approaching objects. Research upon LGMD neurons began in the early 1970s. Initially, due to their large size, these neurons were identified as motion detectors, but their role as looming detectors was recognized over time. Since then, progress in neuroscience, computational modeling of LGMD's visual neural circuits, and LGMD-based robotics have advanced in tandem, each field supporting and driving the others. Today, with a deeper understanding of LGMD neurons, LGMD-based models have significantly improved collision-free navigation in mobile robots including ground and aerial robots. This review highlights recent developments in LGMD research from the perspectives of neuroscience, computational modeling, and robotics. It emphasizes a biologically plausible research paradigm, where insights from neuroscience inform real-world applications, which would in turn validate and advance neuroscience. With strong support from extensive research and growing application demand, this paradigm has reached a mature stage and demonstrates versatility across different areas of neuroscience research, thereby enhancing our understanding of the interconnections between neuroscience, computational modeling, and robotics. Furthermore, this paradigm would shed light upon the modeling and robotic research into other motion-sensitive neurons or neural circuits.
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