Neurotheology and God Does the field of Neurotheology present a threat to Christianity?

Neurotheology is a field of science that tries to correlate brain states to spiritual experiences, such as speaking in tongues, prayer, and meditation.  Scientists' understanding of the brain is getting more and more detailed.  My question is, if it succeeds in correlating the two, does that threaten the Christian beliefs in God, spiritual beings, free will, human consciousness, etc.?  Or would it actually reinforce those concepts?
Barbara Bradley Haggerty (most known for being NPRs religion correspondent but also a former Christian Science practitioner turned Christian herself) investigated many of these claims in her book The Fingerprints of God. The book seeks to be a compendium of scientific investigations about the brain and its relationship to God. 

While to book itself is fascinating, her conclusion is what speaks to your question. Her basic point was that these investigations may explain brain functioning better but ultimately still leaves a lot of room (an imperative actually) for God. 

She also suggests that what all of the deepest religious practices reveal is that while each religion moves one closer to the God hinted at by the scientific research she chronicles, they do so in different ways, leading Haggerty to the analogy of a bike wheel. 

She presumes that all religions get you to the same God (This is a highly questionable postulate in most forms of Christianity, but it is what she espouses). She sees each religion as a single spoke of that wheel leading one to God. Borrowing practices from other religions doesn't get you closer to the center because each one is a completely different path. 

What is interesting in regards neurotheology is that in Haggertys estimation, these scientific studies in many cases point towards the reality of transcendent Spiritual being who calls but does not command adherence, thus allowing for Spirit, God, and free will, much like the original Christianity from which Haggerty begins.