the god part of the brain again, i am convinced that the author is mistaken, his early reaction to hallucinogens created an imprint that stayed with him and his rescue by pharmaceuticals confirmed and validated his perception. he talks about this in his introduction. with this imprint he is already formed the part of the brain synaptic network that will lock this belief in, therefore it is true for him, and science will validate it. ego remains alive. yet the aya experience is death, how can this death be meaningless and concerned with genetics when it is a process that can only be navigated by a spiritual surrender. the science would say that this is neurology and they are correct but the same applies to the spiritualistic view of shamanism, belief is the key.
if i looked at some one with a mental illness i could cure them with medication or shamanism which would mean banishing demonic entities from the mind. they are the same, just different language only the shaman is much more powerful as it is natural. the chemical approach would involve suppression and brain chemical alteration. in the end the god part of the brain actually proves nothing, but acts a theory exactly the same way shamanism is. both are constructed measures of reality in a way. however science is a cynics path towards god. and there is nothing wrong with that because there is nothing worse than blind faith.