学会発表 第103回日本生理学会大会（東京都） ２０２６年３月１２日

タイトル：熱力学第二法則と神経の情報伝達
Title: The Second Law of Thermodynamics and Neural Information Transmission

伊藤 挙1,2, 羽田 克彦1,2,3 松戸 隆之1 (1.数理医科学研究センター, 2.国士舘大学, 3.東京理科大学, 東京慈恵会医科大学, 未来図みなとクリニック)
Abstract:

The second law of thermodynamics states that changes within a closed system invariably involve an increase in entropy, moving towards thermal equilibrium. To maintain homeostasis, organisms must therefore acquire negative entropy from the external environment, as Schrödinger pointed out. According to Shannon’s information theory, entropy and information are equivalent. The nervous system contributes to homeostasis by processing information, but this information processing necessarily incurs an entropy cost accordig to Landauer’s principle. This can be calculated in terms of free energy, and it is thought that the nervous system evolved to minimise this cost. In this study, we attempted to re-evaluate the energy cost of the nervous system from the perspectives of thermodynamics and information theory.