The hypothesis of “quantum coherent brain dynamics” was introduced by Ricciardi and Umezawa in the late sixties [1]. In the following years, the hypothesis was further advanced to decipher behavior and memory effects [2,3]. According to the proposition, the coherent quantum functionality of the brain is founded on the interaction between a large number of 50 μm spatially distributed coherent quantum states, known as “tunneling photons” and the vector potential of the electromagnetic field. Because a tunneling photon system behaves as a superconducting functional system, an extensive number of data processing requires not only minimum energy consumption but also brain memory and instantaneous and coordinated functionalities of different brain areas emerge as the natural outcome of brain tunneling photon interactions. Furthermore, brain functionality and human behavior is adequately described on account of transitions (oscillations) between three quantum coherent states; one pure ground state (logic-L), one pure excited state (paranoiac-P) and a metastable (M) symmetric (a superposition of the previous L and P quantum states).Transitions between pure quantum states and metastable antisymmetric states are forbidden, in agreement with the classical metastable brain theory [4].
