Note my point in an earlier post;
The principle is the question of God is an impossibility to fit within the ambit of Science, thus neuroscience or whatever faculty of Science.
Scientific knowledge is the most objective and credible source of knowledge within empirical-rational reality.
As stated above the question of God cannot be within the ambit of Science at all.
Now you tell me what other modes of reality can you prove the reality of God?
Theists will insist God is real is a possibility but cannot provide justifications for a starting basis to begin to justify God’s existence.
Yes, Psychology is not the ultimate ground of Being, but psychology provides the reason why theists must believe in a God [illusory] to soothe the inherent and unavoidable existential angst.
It is psychology and psychiatry that expose the basis of the experience of God is from the brain when triggered by various things, like mental illnesses, brain damage, drugs, meditations, etc.
There are non-theistic religions and spirituality that recognize this psychological existential basis and dealt with the same issue psychologically.