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arXiv 2505.04331q-bio.NC
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神经表征一致性源于概率性神经-行为表征对齐

Neural Representational Consistency Emerges from Probabilistic Neural-Behavioral Representation Alignment

Yu Zhu, Chunfeng Song, Wanli Ouyang, Shan Yu, Tiejun Huang

AI总结:

本文提出概率性神经-行为表征对齐框架 PNBA,通过零样本验证在猴运动皮层和小鼠视觉皮层中揭示跨个体保留的神经表征,从而解决神经异质性悖论并实现零样本行为解码。

摘要:

个体大脑表现出显著的结构和生理异质性,然而神经回路却能在不同个体间产生高度一致的功能特性,这是神经科学中的一个明显悖论。尽管近期研究通过跨被试手动对齐在运动皮层中观察到了保留的神经表征,但这种保留的零样本验证及其向更多皮层的推广仍未得到探索。在此,我们提出 PNBA(Probabilistic Neural-Behavioral Representation Alignment,概率性神经-行为表征对齐),这是一个新框架,利用概率建模来处理跨试次、会话和被试的层级变异性,并通过生成式约束防止表征退化。通过建立可靠的跨模态表征对齐,PNBA 在猴子初级运动皮层(M1)和背侧前运动皮层(PMd)中通过零样本验证揭示了稳健保留的神经表征。我们进一步在小鼠初级视觉皮层(V1)中确立了类似的表征保留,反映了一种普遍的神经基础。这些发现通过建立跨皮层和跨物种的零样本保留神经表征,解决了神经异质性悖论,丰富了神经编码见解,并使零样本行为解码成为可能。

英文摘要:

Individual brains exhibit striking structural and physiological heterogeneity, yet neural circuits can generate remarkably consistent functional properties across individuals, an apparent paradox in neuroscience. While recent studies have observed preserved neural representations in motor cortex through manual alignment across subjects, the zero-shot validation of such preservation and its generalization to more cortices remain unexplored. Here we present PNBA (Probabilistic Neural-Behavioral Representation Alignment), a new framework that leverages probabilistic modeling to address hierarchical variability across trials, sessions, and subjects, with generative constraints preventing representation degeneration. By establishing reliable cross-modal representational alignment, PNBA reveals robust preserved neural representations in monkey primary motor cortex (M1) and dorsal premotor cortex (PMd) through zero-shot validation. We further establish similar representational preservation in mouse primary visual cortex (V1), reflecting a general neural basis. These findings resolve the paradox of neural heterogeneity by establishing zero-shot preserved neural representations across cortices and species, enriching neural coding insights and enabling zero-shot behavior decoding.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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