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Paper   IPM / Physic / 13875
School of Physics
  Title:   Quantum decoherence time scales for ionic superposition states in ion channels
  Author(s): 
1.  V. Salari
2.  N. Moradi
3.  M. Sajadi
4.  F. Fazileh
5.  F. Shahbazi
  Status:   Published
  Journal: Phys. Rev. E
  Vol.:  91
  Year:  2015
  Pages:   032704
  Supported by:  IPM
  Abstract:
There are many controversial and challenging discussions about quantum effects in microscopic structures in neurons of the brain and their role in cognitive processing. In this paper, we focus on a small, nanoscale part of ion channels which is called the ßelectivity filter" and plays a key role in the operation of an ion channel. Our results for superposition states of potassium ions indicate that decoherence times are of the order of picoseconds. This decoherence time is not long enough for cognitive processing in the brain, however, it may be adequate for quantum superposition states of ions in the filter to leave their quantum traces on the selectivity filter and action potentials.

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