arXiv:2508.06501q-bio.NCcs.AI2025-08

用大脑微环路构建高效可解释的神经网络,性能媲美深度学习。

Computing with Canonical Microcircuits

  • 基于大脑皮层通用微环路设计神经微分方程模型,模拟真实神经连接。
  • 单个模块在MNIST上达97.8%准确率,层级结构提升复杂图像任务表现。
  • 参数量远低于传统模型,动态轨迹可解释,适合追求效率与透明性的研究者。

人类大脑是在20瓦功耗下实现稳健学习和自适应决策的唯一已知通用智能体,其行为自然契合人类价值观。受大脑启发,我们提出一种基于通用微环路(Canonical Microcircuits, CMCs)的计算架构——这类神经元的标准化排列广泛存在于皮层中。我们将这些电路实现为包含棘状星形、抑制性和锥体神经元的神经微分方程,构成具有生物合理递归连接的8维动力系统。实验表明,单个CMC节点在MNIST上达到97.8%准确率;而具有可学习区域间连接和递归连接的层次化配置,在更复杂的图像基准测试中表现更优。值得注意的是,该方法在显著减少参数量的前提下实现了与主流深度学习模型相当的性能。相空间分析揭示了不同输入类别的独特动力学轨迹,展现出类似生物系统的可解释性涌现行为。这些发现表明,类脑计算路径可在提升人工神经网络效率与可解释性方面开辟新方向,推动基于人类大脑计算原理的参数高效架构发展。

原文摘要 · Abstract (English)

The human brain represents the only known example of general intelligence that naturally aligns with human values. On a mere 20-watt power budget, the brain achieves robust learning and adaptive decision-making in ways that continue to elude advanced AI systems. Inspired by the brain, we present a computational architecture based on canonical microcircuits (CMCs) - stereotyped patterns of neurons found ubiquitously throughout the cortex. We implement these circuits as neural ODEs comprising spiny stellate, inhibitory, and pyramidal neurons, forming an 8-dimensional dynamical system with biologically plausible recurrent connections. Our experiments show that even a single CMC node achieves 97.8 percent accuracy on MNIST, while hierarchical configurations - with learnable inter-regional connectivity and recurrent connections - yield improved performance on more complex image benchmarks. Notably, our approach achieves competitive results using substantially fewer parameters than conventional deep learning models. Phase space analysis revealed distinct dynamical trajectories for different input classes, highlighting interpretable, emergent behaviors observed in biological systems. These findings suggest that neuromorphic computing approaches can improve both efficiency and interpretability in artificial neural networks, offering new directions for parameter-efficient architectures grounded in the computational principles of the human brain.

类脑计算神经ODE可解释性参数高效

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