Maybe it's just me. I couldn't get your link to work. I did, however, google 'god helmet' (two E's) and
found this video, which I suppose must be what you were referring to.
All right. Interesting. I gather you're kidding about wanting to buy one. I don't see why you would. Even the scientist who conducted the experiment said you could recreate the experience in any sort of church, synagogue, temple or mosque or alone in your room. I don't see how magnetically stimulating certain areas of the brain show that all religious experiences are false, if that's what they were trying to prove. Maybe they just found 'the spiritual door' that is there for the few rare times when 'the gods' want to contact us. Toward the end the scientist admits there are stimuli to religious experience we/they may not have even considered in the experiments, so whatever... I am not impressed and these experiments neither prove or disprove anything.
The experiments also mention consolation of fear of death, which is always nice, but I know that my religious feelings rarely have anything to do with fear of death. They have more to do with the worries of life, or sometimes just pure joy basking in God's love.
Thanks for raising the issue just the same.