让脑图神经网络学会视觉记忆,生成更符合认知特征的脑网络。
CogGNN: Cognitive Graph Neural Networks in Generative Connectomics
- 引入视觉记忆损失,使GNN具备认知能力
- 生成兼具结构与认知意义的群体脑图模板
- 适合脑科学与认知神经建模研究者
生成式学习推动了网络神经科学的发展,支持图超分辨率、时序图预测和多模态脑图融合等任务。然而,现有基于图神经网络(GNN)的方法仅关注结构与拓扑特性,忽视了认知属性。为此,我们提出首个具认知能力的生成模型CogGNN,赋予GNN如视觉记忆等认知功能,以生成保留认知特征的脑网络。虽具通用性,本文聚焦于整合视觉输入的特定变体,这是模式识别与记忆回溯等脑功能的关键。作为概念验证,我们利用该模型学习连接性脑模板(CBTs),即来自多视角脑网络的群体级指纹。与忽略认知属性的先前方法不同,CogGNN生成的CBTs在认知与结构上均具意义。贡献包括:(i) 一种基于视觉记忆损失的认知感知生成模型;(ii) 采用协同优化策略的CBT学习框架,生成中心性强、可区分且认知增强的模板。大量实验表明,CogGNN优于当前最优方法,为基于认知的脑网络建模奠定了坚实基础。
原文摘要 · Abstract (English)
Generative learning has advanced network neuroscience, enabling tasks like graph super-resolution, temporal graph prediction, and multimodal brain graph fusion. However, current methods, mainly based on graph neural networks (GNNs), focus solely on structural and topological properties, neglecting cognitive traits. To address this, we introduce the first cognified generative model, CogGNN, which endows GNNs with cognitive capabilities (e.g., visual memory) to generate brain networks that preserve cognitive features. While broadly applicable, we present CogGNN, a specific variant designed to integrate visual input, a key factor in brain functions like pattern recognition and memory recall. As a proof of concept, we use our model to learn connectional brain templates (CBTs), population-level fingerprints from multi-view brain networks. Unlike prior work that overlooks cognitive properties, CogGNN generates CBTs that are both cognitively and structurally meaningful. Our contributions are: (i) a novel cognition-aware generative model with a visual-memory-based loss; (ii) a CBT-learning framework with a co-optimization strategy to yield well-centered, discriminative, cognitively enhanced templates. Extensive experiments show that CogGNN outperforms state-of-the-art methods, establishing a strong foundation for cognitively grounded brain network modeling.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品;中文卡片由大模型生成,请以原文为准。