论文标题
多元Ornstein-Uhlenbeck过程的熵产生与人脑中的意识水平相关
Entropy production of Multivariate Ornstein-Uhlenbeck processes correlates with consciousness levels in the human brain
论文作者
论文摘要
意识受到大脑活动的复杂模式的支持，这表明不可逆的非平衡动力学。尽管随机热力学的框架促进了对这种物理系统的理解，但它用于推断经验数据的意识水平的应用仍然难以捉摸。我们通过计算fMRI脑活动记录的多元Ornstein-Uhlenbeck过程中的熵产生来面临这一挑战。为了测试这种方法，我们专注于从清醒到深度睡眠的过渡，揭示了熵产生与意识水平之间的单调关系。我们的结果构成了意识的强大签名，同时还从统计物理学的基本角度来促进我们对意识与复杂性之间的联系的理解。
Consciousness is supported by complex patterns of brain activity which are indicative of irreversible non-equilibrium dynamics. While the framework of stochastic thermodynamics has facilitated the understanding of physical systems of this kind, its application to infer the level of consciousness from empirical data remains elusive. We faced this challenge by calculating entropy production in a multivariate Ornstein-Uhlenbeck process fitted to fMRI brain activity recordings. To test this approach, we focused on the transition from wakefulness to deep sleep, revealing a monotonous relationship between entropy production and the level of consciousness. Our results constitute robust signatures of consciousness while also advancing our understanding of the link between consciousness and complexity from the fundamental perspective of statistical physics.
