The third article discusses the theory that excessive amounts of the stress hormone cortisol may have a shrinking effect on the development of the hippocampus, leaving the person more vulnerable to depression due to having fewer serotonin receptors.
Yes. Excessive amounts of the stress hormone cortisol (normally combined with adrenaline) also leave the amygdala in overdrive and a person is in continuous fight of flight mode. That, for me, is a big part of the MLC mania/depression.
Sometimes I used to daydream in class. Mostly when classes were boring and I already knew the subjects. But I also manage to know what the teacher was saying. Doubt there is anything wrong with normal daydreaming.
Ego is a word I leave out. It is not from the domain of pure neuroscience. It is from psychotherapy. Even if I found the board my googling Jung + MLC, I separate things. One thing is pure neuroscience, the other the poetic, dreamy, Jungian theory (Freud is far less poetic of dreamy).
I don't see so much disassociation. More a mimic of bipolar, and, at times, psychotic. As said in one of the articles, dissociation is a normal coping mechanism. Our MLCer were not suffering form dissociation for 20, 30 or more years. They may be using it during MLC as a coping mechanism, but they do not suffer from a full blown dissociative disorder.
Many things in the brain could explain the loss of memory. Or in the body. Tiredness being one of them. It may also be a protective mechanism in order to allow the MLCer to survive the crisis.
Sometimes good things fall apart so better things can fall together. (Marilyn Monroe)