Evolutionary origins of synchronization for integrating information in neurons

Takashi Shibata*, Noriaki Hattori, Hisao Nishijo, Tsutomu Takahashi, Yuko Higuchi, Satoshi Kuroda, Kaoru Takakusaki

*Corresponding author for this work

Research output: Contribution to journalShort surveypeer-review

Abstract

The evolution of brain-expressed genes is notably slower than that of genes expressed in other tissues, a phenomenon likely due to high-level functional constraints. One such constraint might be the integration of information by neuron assemblies, enhancing environmental adaptability. This study explores the physiological mechanisms of information integration in neurons through three types of synchronization: chemical, electromagnetic, and quantum. Chemical synchronization involves the diffuse release of neurotransmitters like dopamine and acetylcholine, causing transmission delays of several milliseconds. Electromagnetic synchronization encompasses action potentials, electrical gap junctions, and ephaptic coupling. Electrical gap junctions enable rapid synchronization within cortical GABAergic networks, while ephaptic coupling allows structures like axon bundles to synchronize through extracellular electromagnetic fields, surpassing the speed of chemical processes. Quantum synchronization is hypothesized to involve ion coherence during ion channel passage and the entanglement of photons within the myelin sheath. Unlike the finite-time synchronization seen in chemical and electromagnetic processes, quantum entanglement provides instantaneous non-local coherence states. Neurons might have evolved from slower chemical diffusion to rapid temporal synchronization, with ion passage through gap junctions within cortical GABAergic networks potentially facilitating both fast gamma band synchronization and quantum coherence. This mini-review compiles literature on these three synchronization types, offering new insights into the physiological mechanisms that address the binding problem in neuron assemblies.

Original languageEnglish
Article number1525816
JournalFrontiers in Cellular Neuroscience
Volume18
DOIs
StatePublished - 2024

Keywords

  • binding problem
  • GABAergic inhibitory interneurons
  • information integration
  • molecular evolution
  • neuron assemblies
  • quantum coherence
  • synchronization

ASJC Scopus subject areas

  • Cellular and Molecular Neuroscience

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