From my post #73:
"Good points, and maybe valid if referring only to the Mystical Experience, which is fairly consistent and universal. But even this seems to have no relation to religion or the Abrahamic God."
The delusions are not consistent, nor are their attributions, and the only common experience is more connected to Eastern than Western traditions.
I'm not dismissing experience. I'm questioning the consistency, causes and neurology of the many varieties of epiphany. They are not all having a common experience.
Is the experience of someone at a religious revival the same as the ecstatic experience of someone using drugs, seizing, experiencing pain, or music, or starving?
Are you calling different experiences by a single name, and connecting them to a single religious belief system?
Neuroscience of religion - Wikipedia
Could even the Mystical Experience be purely a product of a common neurology, producing a common hallucination? Is the commonality a product of a common God, or a shared biology?
Different cultural traditions between East and West dictate that religious experience and practice are described and interpreted in different terms, but the Spirit is the same imo. There is enough common ground between The Gospels, the Bhagavad Gita, the Dhammapada, not to mention the writings of Christian mystics like St John of The Cross and Julian of Norwich, plus Sufi poets like Rumi and Attar, to illustrate that while the language and cultural dressing varies, experience of the Sublime is universal.
If you believe that material existence is all there is, then you will naturally try to explain or understand all phenomena in those terms. I understand that modern science has made considerable progress in monitoring the way sensation, experience, and response to stimuli register in the brain. Clearly, this does not mean the experience originates in the brain, nor that the entire kaleidoscopic range of human experience can be viewed purely as a neurological function. At the very least, you must accept that the measurable neurological response originates normally as a result of sensory stimuli. The brain is responding to something, it is not manufacturing the experience itself; except, as you argue, in the case of hallucination.
Hallucinations are generally accompanied by a range of other pathologies. When a person betraying other symptoms of psychosis tells us they have been receiving messages from God, we can perhaps dismiss this as a hallucination. When a person tells us that they have had a profound spiritual experience which has led them to a new, infinitely more satisfying and productive way of living than they had been capable of before, we would do well to at least look at the evidence with an open mind. Here is one example;
"...Confined in a hospital [our friend's] gorge rose as he bitterly called out: "If there is a God, he hasn't done much for me!"
But later, alone in his room...like a thunderbolt, a great thought came. It crowded out all else:
'Who are you to say there is no God?'
This man recounts that hs tumbled out of bed to his knees. In a few seconds he was overwhelmed by a conviction of the Presence of God. It poured over and through him with the certainty and majesty of a great tide at flood. The barriers he had built through the years were swept away. He stood in the Presence of Infinite Power and Love..."
Easy enough to dismiss the experience above as a hallucination if you are so inclined. But consider this; the man who had that experience walked out of an institution whose doctors had pronounced him a hopeless case, and never went back there. Instead, a once hopeless drunk, he went on to lead a full and productive life characterised by love and service towards others. If his experience was really just a hallucination, wouldn't we expect it to have led him in the opposite direction - not out of a psychiatric ward, but into one?
That man's experience is by no means a one off be, I've personally met and spoken with many like him. History and literature is replete with other examples; Tolstoy's account of Prince Andrei's epiphany at the dressing station during the Battle of Borodino being imo one of the most transcendent passages of writing in the Western canon.