Hellenic Psyche's Comment
The first video argues for the existence of microtubules inside the neurons and their totality migt be the soul. They operate and be detectable only on a very subtle level of the quantum microcosm and maybe that's why we cannot detect them yet. However, they have to be entangled and unified on an even more subtle level and store quantum information. Here, the video should also add the it's not just the neurons. It's far more than that. The neuronal microtubules would be the hardware of the cognitive process that is the Mind and its quantum information could be Thoughts themselves. Those microtubules, if they are real, it would make sense if the exist in every cell, because that's what the Soul or Psyche is: BLFM, that is Bioplasmic Life Force Matrix. It's a unified very subtle holographic life force matrix that consists of bioplasma that is a nexus of biophotons. The autodynamic self-aware function of the entire soul/psyche constitutes Consciousness and it's what connects it to the Collective Unconscious through Transcendental Function, as Carl Jung said or the Cosmic Consiousness, as William James said. The mcrotubules of the autonomic nervous system (spine, sympathetic/parasympathetic nervous system of the heart that is a subsystem of the autonomous nervous system) that controls involuntary movement and sensory information processing may constitute the metaphor/connotation of Heart (i.e. he has the heart for that, my sweetheart, she has a good hear) that is the domain of Emotions! The microtubules of the enteric nervous system in the Iliac Plexus which is a subsystem for the autonomous nervous system could be the so called Gut Feeling. The soul/psyche that is detached from the body either during psi phenomena (that is spiritual/psychic phenomena), such as out-of-body experience or when the body has died or is the person is in coma that is the Spirit.