The importance of quantum decoherence in brain processes

  title={The importance of quantum decoherence in brain processes},
  author={Max Tegmark},
  journal={Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics},
  volume={61 4 Pt B},
  • Max Tegmark
  • Published 5 July 1999
  • Physics
  • Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
Based on a calculation of neural decoherence rates, we argue that the degrees of freedom of the human brain that relate to cognitive processes should be thought of as a classical rather than quantum system, i.e., that there is nothing fundamentally wrong with the current classical approach to neural network simulations. We find that the decoherence time scales ( approximately 10(-13)-10(-20) s) are typically much shorter than the relevant dynamical time scales ( approximately 10(-3)-10(-1) s… 

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