I heard about this awhile back. I really think it needs a public blog post, though.
The [study] alleges that people's beliefs can be changed by restricting parts of the brain that process "threats".
I'm not going to focus on the immigration part of it. I'm only going to focus on the "faith in God" part.
The only reason one's faith can be decreased by taking away "threats" is if one's faith is already based on threats. The fear of divine punishment is real, but it should NEVER be the only thing keeping one hanging on. In that case, it's not faith at all, but rather, fear.
Christian teachings are primarily backed by [history], [prophecy] and [facts]. Of course there will be anecdotal evidence that can't be proven with science, but that's par for the course with almost anything one experiences -- Christian or otherwise, "religious/spiritual" or mundane.
If effectively disabling one's sense of "fear" is enough to reduce their faith in God in the light of how many centuries of evidence, philosophy, archaeology and more, ............... there was never faith there to begin with.
If you truly believe in the truth of Christianity, then you won't need the emotion of "fear". You will acknowledge the truth of Christianity as you acknowledge the color of the sky; as you acknowledge mathematical principles; as you acknowledge time passing on a clock; as you acknowledge the changing of seasons; as you acknowledge anything.
Disabling parts of the brain with magnets CANNOT weaken faith in God.
May God bless you all and guide you according to His perfect will! In Jesus' name. Amen.