Journal
MATHEMATICAL BIOSCIENCES AND ENGINEERING
Volume 20, Issue 7, Pages 12380-12403Publisher
AMER INST MATHEMATICAL SCIENCES-AIMS
DOI: 10.3934/mbe.2023551
Keywords
information theory; neural information; neuron operating mode; neural communication; information content; limiting information capacity; neural bandwidth
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Neural information theory is a fundamental method for modeling dynamic relations in biological systems, but there are fierce debates about the notion, representation, content, and processing of information. By analyzing the differences between communication models published in the past seven decades and the recently developed generalized classical information theory, the operating modes of neurons are revisited and found to resemble a combination of analog and digital modes. This challenges the interpretation of neural information and its processing. Additionally, the active role of transfer channels (axons) may introduce further transmission limits beyond those concluded from information theory.
Neural information theory represents a fundamental method to model dynamic relations in biological systems. However, the notion of information, its representation, its content and how it is processed are the subject of fierce debates. Since the limiting capacity of neuronal links strongly depends on how neurons are hypothesized to work, their operating modes are revisited by analyzing the differences between the results of the communication models published during the past seven decades and those of the recently developed generalization of the classical information theory. It is pointed out that the operating mode of neurons is in resemblance with an appropriate combination of the formerly hypothesized analog and digital working modes; furthermore that not only the notion of neural information and its processing must be reinterpreted. Given that the transmission channel is passive in Shannon's model, the active role of the transfer channels (the axons) may introduce further transmission limits in addition to the limits concluded from the information theory. The time-aware operating model enables us to explain why (depending on the researcher's point of view) the operation can be
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